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708 vulnerabilities by isc
CERTFR-2026-AVI-1192
Vulnerability from certfr_avis - Published: 2026-09-17 - Updated: 2026-09-17
De multiples vulnérabilités ont été découvertes dans ISC BIND. Elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à l'intégrité des données et un contournement de la politique de sécurité.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
| Title | Publication Time | Tags | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "BIND Supported Preview Edition versions ant\u00e9rieures \u00e0 9.20.29-S1",
"product": {
"name": "BIND Supported Preview Edition",
"vendor": {
"name": "ISC",
"scada": false
}
}
},
{
"description": "Bind versions 9.21.x ant\u00e9rieures \u00e0 9.21.26",
"product": {
"name": "BIND",
"vendor": {
"name": "ISC",
"scada": false
}
}
},
{
"description": "Bind versions ant\u00e9rieures \u00e0 9.20.29",
"product": {
"name": "BIND",
"vendor": {
"name": "ISC",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-81736",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-81736"
},
{
"name": "CVE-2026-80274",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-80274"
},
{
"name": "CVE-2026-75029",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-75029"
},
{
"name": "CVE-2026-77119",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-77119"
},
{
"name": "CVE-2026-76163",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-76163"
},
{
"name": "CVE-2026-78301",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-78301"
},
{
"name": "CVE-2026-77692",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-77692"
},
{
"name": "CVE-2026-81563",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-81563"
}
],
"initial_release_date": "2026-09-17T00:00:00",
"last_revision_date": "2026-09-17T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1192",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-09-17T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans ISC BIND. Elles permettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance, une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans ISC BIND",
"vendor_advisories": [
{
"published_at": "2026-09-16",
"title": "Bulletin de s\u00e9curit\u00e9 ISC BIND cve-2026-75029",
"url": "https://kb.isc.org/v1/docs/cve-2026-75029"
},
{
"published_at": "2026-09-16",
"title": "Bulletin de s\u00e9curit\u00e9 ISC BIND cve-2026-78301",
"url": "https://kb.isc.org/v1/docs/cve-2026-78301"
},
{
"published_at": "2026-09-16",
"title": "Bulletin de s\u00e9curit\u00e9 ISC BIND cve-2026-77119",
"url": "https://kb.isc.org/v1/docs/cve-2026-77119"
},
{
"published_at": "2026-09-16",
"title": "Bulletin de s\u00e9curit\u00e9 ISC BIND cve-2026-81563",
"url": "https://kb.isc.org/v1/docs/cve-2026-81563"
},
{
"published_at": "2026-09-16",
"title": "Bulletin de s\u00e9curit\u00e9 ISC BIND cve-2026-77692",
"url": "https://kb.isc.org/v1/docs/cve-2026-77692"
},
{
"published_at": "2026-09-16",
"title": "Bulletin de s\u00e9curit\u00e9 ISC BIND cve-2026-81736",
"url": "https://kb.isc.org/v1/docs/cve-2026-81736"
},
{
"published_at": "2026-09-16",
"title": "Bulletin de s\u00e9curit\u00e9 ISC BIND cve-2026-80274",
"url": "https://kb.isc.org/v1/docs/cve-2026-80274"
},
{
"published_at": "2026-09-16",
"title": "Bulletin de s\u00e9curit\u00e9 ISC BIND cve-2026-76163",
"url": "https://kb.isc.org/v1/docs/cve-2026-76163"
}
]
}
CVE-2026-80274 (GCVE-0-2026-80274)
Vulnerability from nvd – Published: 2026-09-16 14:07 – Updated: 2026-09-17 17:37
VLAI
EPSS
VEX
Title
Validating resolver can abort while caching a mismatched NOQNAME proof
Summary
If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:37 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-80274 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.11.3-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-09-16 00:00
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CVE-2026-77119 (GCVE-0-2026-77119)
Vulnerability from nvd – Published: 2026-09-16 14:17 – Updated: 2026-09-17 18:39
VLAI
EPSS
VEX
Title
NSEC3 insecure-referral proof can use unrelated cached NSEC3 RRsets
Summary
A validly signed NSEC3 from an unrelated sibling zone may be accepted as an insecurity proof, downgrading a secure delegation and letting a forged unsigned answer through.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:39 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-77119 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.11.3-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-09-16 00:00
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CVE-2026-76163 (GCVE-0-2026-76163)
Vulnerability from nvd – Published: 2026-09-16 14:05 – Updated: 2026-09-17 17:38
VLAI
EPSS
VEX
Title
named aborts on a TKEY query when the user configuration has no global options statement
Summary
If BIND is loaded with a "`named.conf`" file that contains no global "`options`" block, an attacker can send a query of QTYPE TKEY which may cause an assertion failure and subsequent unexpected program exit.
This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:37 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-76163 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
Date Public
2026-09-16 00:00
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CVE-2026-75029 (GCVE-0-2026-75029)
Vulnerability from nvd – Published: 2026-09-16 14:15 – Updated: 2026-09-17 18:40
VLAI
EPSS
VEX
Title
Message parser retains every identical singleton RDATA, enabling wire-to-work amplification
Summary
In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an SOA record). If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly lead to other memory attack vectors.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:40 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-75029 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
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CVE-2026-19668 (GCVE-0-2026-19668)
Vulnerability from nvd – Published: 2026-09-16 14:12 – Updated: 2026-09-17 18:40
VLAI
EPSS
VEX
Title
Resource Exhaustion via Excessive DNSSEC Cryptographic Material Matching
Summary
A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a particular kind of invalid DNSSEC record. Default limits on "max-records-per-type" and "max-types-per-name" help mitigate the exposure.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:40 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19668 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-19666 (GCVE-0-2026-19666)
Vulnerability from nvd – Published: 2026-09-16 14:02 – Updated: 2026-09-17 17:38
VLAI
EPSS
VEX
Title
Use-after-free in query_addnoqnameproof() via the DNS64 filter64 path
Summary
On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server is malformed in a specific way, the resolver `named` process will exit unexpectedly.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:38 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19666 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-19033 (GCVE-0-2026-19033)
Vulnerability from nvd – Published: 2026-09-16 14:10 – Updated: 2026-09-17 17:36
VLAI
EPSS
VEX
Title
Unauthenticated IXFR deltas are applied to the live zone before TSIG verification
Summary
For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone transfer before the final message with the TSIG signature arrives. This could allow an attacker that does not actually possess a valid TSIG signature to send unauthorized zone contents to a secondary server. Although no TSIG signature ever arrives, `named` does not rollback to the pre-transfer state. To exploit the vulnerability, the transfer must be a multi-message TCP IXFR, as described by RFC 8945.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:36 UTC
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19033 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-81736 (GCVE-0-2026-81736)
Vulnerability from nvd – Published: 2026-09-16 13:44 – Updated: 2026-09-17 18:46
VLAI
EPSS
VEX
Title
Remote CPU denial of service through cached SVCB/HTTPS AliasMode trees
Summary
If a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the resolver will spend disproportionate CPU time constructing the response.
This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:45 UTC
CWE
- CWE-1050 - Excessive Platform Resource Consumption within a Loop
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-81736 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.18.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-81563 (GCVE-0-2026-81563)
Vulnerability from nvd – Published: 2026-09-16 14:00 – Updated: 2026-09-17 17:47
VLAI
EPSS
VEX
Title
SVCB AliasMode additional-data error leaks qpcache references
Summary
A BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups.
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Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:47 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-81563 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.18.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-78301 (GCVE-0-2026-78301)
Vulnerability from nvd – Published: 2026-09-16 13:58 – Updated: 2026-09-17 18:43
VLAI
EPSS
VEX
Title
Out-of-zone database nodes can become authoritative zone cuts
Summary
A malformed zone may contain an NS or DNAME node above its origin, which `named` treats as a zone cut. If an attacker inserts a malformed zone into a BIND authoritative server (e.g., via zone transfer), queries for names inside the configured zone then lose authoritative status and return an out-of-zone delegation. On a server that also provides recursion BIND can follow this locally sourced cut and cache attacker-supplied data, affecting names outside the configured zone. This situation persists as long as the malformed zone remains in the zone database.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:43 UTC
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-78301 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-77692 (GCVE-0-2026-77692)
Vulnerability from nvd – Published: 2026-09-16 13:55 – Updated: 2026-09-17 18:43
VLAI
EPSS
VEX
Title
Unauthenticated remote crash of named via a single DoH SIG(0) request
Summary
An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely.
This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:43 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-77692 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
Date Public
2026-09-16 00:00
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CVE-2026-19941 (GCVE-0-2026-19941)
Vulnerability from nvd – Published: 2026-09-16 13:52 – Updated: 2026-09-17 18:44
VLAI
EPSS
VEX
Title
checkwildcard() accepts an out-of-zone NSEC as a wildcard-nonexistence proof
Summary
An inapplicable NSEC record may be accepted by a `named` resolver as proof that no wildcard exists, which could allow an attacker at the same or an upstream level of the zone name to mask the existence of a victim's wildcard record.
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Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:44 UTC
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19941 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-19667 (GCVE-0-2026-19667)
Vulnerability from nvd – Published: 2026-09-16 13:46 – Updated: 2026-09-17 18:45
VLAI
EPSS
VEX
Title
Remote assertion failure via 16-bit length truncation in `dns_ncache_add()`
Summary
If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in `named` results in a negative cache entry of 0 bytes. When this entry is subsequently read, `named` aborts.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:45 UTC
CWE
- CWE-197 - Numeric Truncation Error
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19667 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-19662 (GCVE-0-2026-19662)
Vulnerability from nvd – Published: 2026-09-16 13:50 – Updated: 2026-09-17 18:45
VLAI
EPSS
VEX
Title
qpcache NOQNAME proof use-after-free crashes recursive resolver
Summary
An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:44 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19662 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-13321 (GCVE-0-2026-13321)
Vulnerability from nvd – Published: 2026-07-22 14:16 – Updated: 2026-07-22 18:51
VLAI
EPSS
VEX
Title
DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field
Summary
The BIND resolver accepts validly-signed NSEC records where the "Next Domain Name" field points outside the signer's zone.
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Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:51 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-13321 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.26 | patch |
| https://downloads.isc.org/isc/bind9/9.21.24 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-07-22 00:00
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CVE-2026-77119 (GCVE-0-2026-77119)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:17 – Updated: 2026-09-17 18:39
VLAI
EPSS
VEX
Title
NSEC3 insecure-referral proof can use unrelated cached NSEC3 RRsets
Summary
A validly signed NSEC3 from an unrelated sibling zone may be accepted as an insecurity proof, downgrading a secure delegation and letting a forged unsigned answer through.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:39 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-77119 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-75029 (GCVE-0-2026-75029)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:15 – Updated: 2026-09-17 18:40
VLAI
EPSS
VEX
Title
Message parser retains every identical singleton RDATA, enabling wire-to-work amplification
Summary
In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an SOA record). If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly lead to other memory attack vectors.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:40 UTC
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-75029 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-19668 (GCVE-0-2026-19668)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:12 – Updated: 2026-09-17 18:40
VLAI
EPSS
VEX
Title
Resource Exhaustion via Excessive DNSSEC Cryptographic Material Matching
Summary
A BIND recursive resolver may experience excessive resource consumption if it encounters large numbers of a particular kind of invalid DNSSEC record. Default limits on "max-records-per-type" and "max-types-per-name" help mitigate the exposure.
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Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:40 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19668 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-19033 (GCVE-0-2026-19033)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:10 – Updated: 2026-09-17 17:36
VLAI
EPSS
VEX
Title
Unauthenticated IXFR deltas are applied to the live zone before TSIG verification
Summary
For a secondary zone with transfers restricted by TSIG, `named` may start to serve the data provided in a zone transfer before the final message with the TSIG signature arrives. This could allow an attacker that does not actually possess a valid TSIG signature to send unauthorized zone contents to a secondary server. Although no TSIG signature ever arrives, `named` does not rollback to the pre-transfer state. To exploit the vulnerability, the transfer must be a multi-message TCP IXFR, as described by RFC 8945.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:36 UTC
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19033 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-80274 (GCVE-0-2026-80274)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:07 – Updated: 2026-09-17 17:37
VLAI
EPSS
VEX
Title
Validating resolver can abort while caching a mismatched NOQNAME proof
Summary
If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:37 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-80274 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.11.3-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-09-16 00:00
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CVE-2026-76163 (GCVE-0-2026-76163)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:05 – Updated: 2026-09-17 17:38
VLAI
EPSS
VEX
Title
named aborts on a TKEY query when the user configuration has no global options statement
Summary
If BIND is loaded with a "`named.conf`" file that contains no global "`options`" block, an attacker can send a query of QTYPE TKEY which may cause an assertion failure and subsequent unexpected program exit.
This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:37 UTC
CWE
- CWE-617 - Reachable Assertion
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-76163 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
Date Public
2026-09-16 00:00
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CVE-2026-19666 (GCVE-0-2026-19666)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:02 – Updated: 2026-09-17 17:38
VLAI
EPSS
VEX
Title
Use-after-free in query_addnoqnameproof() via the DNS64 filter64 path
Summary
On a resolver configured to use ``dns64``, if an applicable answer from the authoritative server is malformed in a specific way, the resolver `named` process will exit unexpectedly.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:38 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19666 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.11.3-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-09-16 00:00
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CVE-2026-81563 (GCVE-0-2026-81563)
Vulnerability from cvelistv5 – Published: 2026-09-16 14:00 – Updated: 2026-09-17 17:47
VLAI
EPSS
VEX
Title
SVCB AliasMode additional-data error leaks qpcache references
Summary
A BIND resolver encountering an SVCB/HTTPS AliasMode record referencing 14 or more SVCB/HTTPS ServiceMode records may fail to properly deallocate internal resources. If this happens repeatedly, resource exhaustion will eventually prevent the resolver from performing new recursive lookups.
This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:47 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-81563 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.18.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-78301 (GCVE-0-2026-78301)
Vulnerability from cvelistv5 – Published: 2026-09-16 13:58 – Updated: 2026-09-17 18:43
VLAI
EPSS
VEX
Title
Out-of-zone database nodes can become authoritative zone cuts
Summary
A malformed zone may contain an NS or DNAME node above its origin, which `named` treats as a zone cut. If an attacker inserts a malformed zone into a BIND authoritative server (e.g., via zone transfer), queries for names inside the configured zone then lose authoritative status and return an out-of-zone delegation. On a server that also provides recursion BIND can follow this locally sourced cut and cache attacker-supplied data, affecting names outside the configured zone. This situation persists as long as the malformed zone remains in the zone database.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:43 UTC
CWE
- CWE-349 - Acceptance of Extraneous Untrusted Data With Trusted Data
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-78301 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-77692 (GCVE-0-2026-77692)
Vulnerability from cvelistv5 – Published: 2026-09-16 13:55 – Updated: 2026-09-17 18:43
VLAI
EPSS
VEX
Title
Unauthenticated remote crash of named via a single DoH SIG(0) request
Summary
An attacker can cause `named` to abort by sending a crafted DNS-over-HTTPS request with a cryptographically invalid SIG(0) record, and then closing the transport connection prematurely.
This issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:43 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-77692 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
Date Public
2026-09-16 00:00
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CVE-2026-19941 (GCVE-0-2026-19941)
Vulnerability from cvelistv5 – Published: 2026-09-16 13:52 – Updated: 2026-09-17 18:44
VLAI
EPSS
VEX
Title
checkwildcard() accepts an out-of-zone NSEC as a wildcard-nonexistence proof
Summary
An inapplicable NSEC record may be accepted by a `named` resolver as proof that no wildcard exists, which could allow an attacker at the same or an upstream level of the zone name to mask the existence of a victim's wildcard record.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:44 UTC
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19941 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.11.3-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-09-16 00:00
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CVE-2026-19662 (GCVE-0-2026-19662)
Vulnerability from cvelistv5 – Published: 2026-09-16 13:50 – Updated: 2026-09-17 18:45
VLAI
EPSS
VEX
Title
qpcache NOQNAME proof use-after-free crashes recursive resolver
Summary
An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a particular sequence of crafted answers, and those answers arrive in a particular order with particular timing, the `named` resolver will encounter a use-after-free bug, and abort.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:44 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19662 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-19667 (GCVE-0-2026-19667)
Vulnerability from cvelistv5 – Published: 2026-09-16 13:46 – Updated: 2026-09-17 18:45
VLAI
EPSS
VEX
Title
Remote assertion failure via 16-bit length truncation in `dns_ncache_add()`
Summary
If an attacker-controlled authoritative server can produce a negative answer that is exactly 65536 bytes, then a flaw in `named` results in a negative cache entry of 0 bytes. When this entry is subsequently read, `named` aborts.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:45 UTC
CWE
- CWE-197 - Numeric Truncation Error
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-19667 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
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Date Public
2026-09-16 00:00
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CVE-2026-81736 (GCVE-0-2026-81736)
Vulnerability from cvelistv5 – Published: 2026-09-16 13:44 – Updated: 2026-09-17 18:46
VLAI
EPSS
VEX
Title
Remote CPU denial of service through cached SVCB/HTTPS AliasMode trees
Summary
If a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the resolver will spend disproportionate CPU time constructing the response.
This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 18:45 UTC
CWE
- CWE-1050 - Excessive Platform Resource Consumption within a Loop
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-81736 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.29 | patch |
| https://downloads.isc.org/isc/bind9/9.21.26 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.18.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.27 (custom) Affected: 9.21.0 , ≤ 9.21.25 (custom) Affected: 9.18.11-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.27-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-09-16 00:00
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