RHSA-2026:19373
Vulnerability from csaf_redhat - Published: 2026-05-19 21:55 - Updated: 2026-05-20 02:44Summary
Red Hat Security Advisory: dnsmasq security update
Severity
Important
Notes
Topic: An update for dnsmasq is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server.
Security Fix(es):
* dnsmasq: dnsmasq: heap buffer overflow in cache via NAME_ESCAPE expansion (CVE-2026-2291)
* dnsmasq: NSEC bitmap parsing infinite loop (CVE-2026-4890)
* dnsmasq: RRSIG rdlen underflow leading to heap OOB read (CVE-2026-4891)
* dnsmasq: DHCPv6 CLID buffer overflow in helper process (CVE-2026-4892)
* dnsmasq: Broken ECS source validation bypass (CVE-2026-4893)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A heap buffer overflow was discovered in dnsmasq's DNS cache. When processing DNS responses, dnsmasq expands certain characters into longer escape sequences, but the cache buffer is not sized to hold the expanded result. A specially crafted DNS response can overflow this buffer, potentially crashing the dnsmasq process or poisoning DNS cache records.
6.5 (Medium)
Affected products
Fixed
21 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.src | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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Threats
Impact
Moderate
A denial of service vulnerability was discovered in dnsmasq's DNSSEC validation. When parsing NSEC and NSEC3 bitmap records, the window iteration logic fails to account for the 2-byte window header when advancing through the bitmap data. A specially crafted DNS response with a zero-length bitmap can cause an infinite loop, making dnsmasq unresponsive to all queries.
7.5 (High)
Affected products
Fixed
21 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.src | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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Threats
Impact
Important
A heap out-of-bounds read vulnerability was discovered in dnsmasq's DNSSEC validation. When processing RRSIG records, dnsmasq calculates the signature length by subtracting the fixed field size from the record's declared data length. A crafted RRSIG record with a data length smaller than the fixed fields causes this calculation to underflow, potentially resulting in an out-of-bounds read and process crash.
7.5 (High)
Affected products
Fixed
21 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.src | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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Threats
Impact
Important
A heap buffer overflow was discovered in dnsmasq's DHCP script helper process. When processing DHCPv6 client identifiers (CLIDs), the helper hex-encodes the raw CLID bytes into a fixed-size buffer without length validation. Since DHCPv6 CLIDs can be up to 65,535 bytes, a crafted DHCPv6 packet can overflow the buffer with attacker-controlled content. The helper process runs with root privileges.
8.8 (High)
Affected products
Fixed
21 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.src | — |
Vendor Fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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Threats
Impact
Important
A validation bypass was discovered in dnsmasq's RFC 7871 client subnet (ECS) handling. When verifying ECS source information in DNS responses, dnsmasq passes the OPT record length instead of the full packet length to the validation function.This causes all internal bounds checks to fail, completely bypassing ECS source validation and allowing an attacker to spoof client subnet information.
6.5 (Medium)
Affected products
Fixed
21 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
|
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.src | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-debugsource-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.aarch64 | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.s390x | — |
Vendor Fix
fix
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| Unresolved product id: AppStream-9.8.0.Z.MAIN.EUS:dnsmasq-utils-debuginfo-0:2.85-18.el9_8.1.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
References
29 references
Acknowledgments
NIST
Andrew Fasano
{
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"title": "dnsmasq: DHCPv6 CLID buffer overflow in helper process"
},
{
"cve": "CVE-2026-4893",
"cwe": {
"id": "CWE-20",
"name": "Improper Input Validation"
},
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2458519"
}
],
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{
"category": "description",
"text": "A validation bypass was discovered in dnsmasq\u0027s RFC 7871 client subnet (ECS) handling. When verifying ECS source information in DNS responses, dnsmasq passes the OPT record length instead of the full packet length to the validation function.This causes all internal bounds checks to fail, completely bypassing ECS source validation and allowing an attacker to spoof client subnet information.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "dnsmasq: Broken ECS source validation bypass",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat rates this as Moderate. This issue affects deployments with the `--add-subnet` option enabled. The impact is limited to bypassing ECS source validation, which could allow cache manipulation scoped to specific subnets or minor information disclosure about network topology.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-4893",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4893"
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{
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"summary": "https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html",
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}
Loading…
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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