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7020 vulnerabilities found for firefox by mozilla
CERTFR-2026-AVI-1106
Vulnerability from certfr_avis - Published: 2026-09-02 - Updated: 2026-09-02
De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Certaines d'entre elles permettent à un attaquant de provoquer une élévation de privilèges, une atteinte à la confidentialité 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
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Mozilla | Firefox ESR | Firefox ESR versions antérieures à 115.40 | ||
| Mozilla | Firefox | Firefox versions antérieures à 155 | ||
| Mozilla | Firefox ESR | Firefox ESR versions antérieures à 153.2 | ||
| Mozilla | Firefox ESR | Firefox ESR versions antérieures à 140.15 | ||
| Mozilla | Thunderbird ESR | Thunderbird ESR versions antérieures à 153.2 | ||
| Mozilla | Thunderbird ESR | Thunderbird ESR versions antérieures à 140.15 | ||
| Mozilla | Thunderbird | Thunderbird versions antérieures à 155 |
References
| Title | Publication Time | Tags | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Firefox ESR versions ant\u00e9rieures \u00e0 115.40",
"product": {
"name": "Firefox ESR",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Firefox versions ant\u00e9rieures \u00e0 155",
"product": {
"name": "Firefox",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Firefox ESR versions ant\u00e9rieures \u00e0 153.2",
"product": {
"name": "Firefox ESR",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Firefox ESR versions ant\u00e9rieures \u00e0 140.15",
"product": {
"name": "Firefox ESR",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Thunderbird ESR versions ant\u00e9rieures \u00e0 153.2",
"product": {
"name": "Thunderbird ESR",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Thunderbird ESR versions ant\u00e9rieures \u00e0 140.15",
"product": {
"name": "Thunderbird ESR",
"vendor": {
"name": "Mozilla",
"scada": false
}
}
},
{
"description": "Thunderbird versions ant\u00e9rieures \u00e0 155",
"product": {
"name": "Thunderbird",
"vendor": {
"name": "Mozilla",
"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-2026-84137",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84137"
},
{
"name": "CVE-2026-84637",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84637"
},
{
"name": "CVE-2026-84640",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84640"
},
{
"name": "CVE-2026-84138",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84138"
},
{
"name": "CVE-2026-84126",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84126"
},
{
"name": "CVE-2026-84135",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84135"
},
{
"name": "CVE-2026-84117",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84117"
},
{
"name": "CVE-2026-84140",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84140"
},
{
"name": "CVE-2026-84134",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84134"
},
{
"name": "CVE-2026-84122",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84122"
},
{
"name": "CVE-2026-84642",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84642"
},
{
"name": "CVE-2026-84121",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84121"
},
{
"name": "CVE-2026-84123",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84123"
},
{
"name": "CVE-2026-16365",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-16365"
},
{
"name": "CVE-2026-16371",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-16371"
},
{
"name": "CVE-2026-84144",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84144"
},
{
"name": "CVE-2026-84641",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84641"
},
{
"name": "CVE-2026-84119",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84119"
},
{
"name": "CVE-2026-84639",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84639"
},
{
"name": "CVE-2026-84132",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84132"
},
{
"name": "CVE-2026-74952",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-74952"
},
{
"name": "CVE-2026-84124",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84124"
},
{
"name": "CVE-2026-84145",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84145"
},
{
"name": "CVE-2026-84136",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84136"
},
{
"name": "CVE-2026-84131",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84131"
},
{
"name": "CVE-2026-75874",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-75874"
},
{
"name": "CVE-2026-84133",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84133"
},
{
"name": "CVE-2026-84129",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84129"
},
{
"name": "CVE-2026-84127",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84127"
},
{
"name": "CVE-2026-84141",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84141"
},
{
"name": "CVE-2026-84125",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84125"
},
{
"name": "CVE-2026-84120",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84120"
},
{
"name": "CVE-2026-84139",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84139"
},
{
"name": "CVE-2026-84142",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84142"
},
{
"name": "CVE-2026-84118",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84118"
},
{
"name": "CVE-2026-84143",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84143"
},
{
"name": "CVE-2026-84130",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84130"
},
{
"name": "CVE-2026-84128",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-84128"
}
],
"initial_release_date": "2026-09-02T00:00:00",
"last_revision_date": "2026-09-02T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1106",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-09-02T00:00:00.000000"
}
],
"risks": [
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
},
{
"description": "D\u00e9ni de service"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Mozilla. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Mozilla",
"vendor_advisories": [
{
"published_at": "2026-09-01",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-83",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-83/"
},
{
"published_at": "2026-09-01",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-87",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-87/"
},
{
"published_at": "2026-09-01",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-85",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-85/"
},
{
"published_at": "2026-09-01",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-84",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-84/"
},
{
"published_at": "2026-09-01",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-88",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-88/"
},
{
"published_at": "2026-09-01",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-82",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-82/"
},
{
"published_at": "2026-09-01",
"title": "Bulletin de s\u00e9curit\u00e9 Mozilla mfsa2026-86",
"url": "https://www.mozilla.org/en-US/security/advisories/mfsa2026-86/"
}
]
}
CVE-2026-84145 (GCVE-0-2026-84145)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-02 03:55
VLAI
EPSS
VEX
Title
Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15
Summary
Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 00:00 UTC
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.40 , ≤ 115.*
(rpm)
Unaffected: 140.15 , ≤ 140.* (rpm) Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-84145",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-01T00:00:00+00:00",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-02T03:55:49.167Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "115.*",
"status": "unaffected",
"version": "115.40",
"versionType": "rpm"
},
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.15",
"versionType": "rpm"
},
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.2",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "155",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "140.*",
"status": "unaffected",
"version": "140.15",
"versionType": "rpm"
},
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.2",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "155",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Leo Tenenbaum, Tom Ritter and the Mozilla Fuzzing Team"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2."
}
],
"value": "Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2."
}
],
"providerMetadata": {
"dateUpdated": "2026-09-01T21:44:09.206Z",
"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"shortName": "mozilla"
},
"references": [
{
"name": "High Severity internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2054640%2C2054650%2C2054652%2C2055693%2C2055705%2C2058051%2C2058652%2C2058660%2C2059027%2C2061220%2C2061242%2C2061285%2C2061300%2C2061316%2C2061397"
},
{
"name": "Low Severity internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15",
"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=2058001%2C2059139%2C2062400%2C2062419"
},
{
"name": "Moderate Severity internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15",
"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2055678"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-82/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-83/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-84/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-85/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-86/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-87/"
},
{
"url": "https://www.mozilla.org/security/advisories/mfsa2026-88/"
}
],
"title": "Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15"
}
},
"cveMetadata": {
"assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
"assignerShortName": "mozilla",
"cveId": "CVE-2026-84145",
"datePublished": "2026-09-01T12:18:43.808Z",
"dateReserved": "2026-09-01T07:26:02.411Z",
"dateUpdated": "2026-09-02T03:55:49.167Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-84144 (GCVE-0-2026-84144)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 15:41
VLAI
EPSS
VEX
Title
Internally found bugs fixed in Thunderbird 155 and Thunderbird ESR 153.2
Summary
Internally found bugs present in Thunderbird 154 and Thunderbird ESR 153.1. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:41 UTC
CWE
- CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-84144",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-03T15:41:23.728845Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-119",
"description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-03T15:41:26.571Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.2",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "155",
"versionType": "rpm"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThanOrEqual": "153.*",
"status": "unaffected",
"version": "153.2",
"versionType": "rpm"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "155",
"versionType": "rpm"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Leo Tenenbaum, Tom Ritter and the Mozilla Fuzzing Team"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Internally found bugs present in Thunderbird 154 and Thunderbird ESR 153.1. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2."
}
],
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CVE-2026-84143 (GCVE-0-2026-84143)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:23
VLAI
EPSS
VEX
Title
Internally found bugs fixed in Thunderbird 155, Thunderbird ESR 153.2 and Thunderbird ESR 140.15
Summary
Internally found bugs present in Thunderbird 154, Thunderbird ESR 153.1 and Thunderbird ESR 140.14. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 17:14 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84142 (GCVE-0-2026-84142)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:23
VLAI
EPSS
VEX
Title
Internally found bugs fixed in Thunderbird 155
Summary
Internally found bugs present in Thunderbird 154. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 17:13 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
155 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
155 , ≤ *
(rpm)
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CVE-2026-84141 (GCVE-0-2026-84141)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:23
VLAI
EPSS
VEX
Title
Integer overflow in the Graphics: ImageLib component
Summary
Integer overflow in the Graphics: ImageLib component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 17:21 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84140 (GCVE-0-2026-84140)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:23
VLAI
EPSS
VEX
Title
Site isolation issue in the DOM: Navigation component
Summary
Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 17:00 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84139 (GCVE-0-2026-84139)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:23
VLAI
EPSS
VEX
Title
Clickjacking issue in the DOM: Events component
Summary
Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 16:50 UTC
CWE
- CWE-1021 - Improper Restriction of Rendered UI Layers or Frames
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84138 (GCVE-0-2026-84138)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:24
VLAI
EPSS
VEX
Title
Denial-of-service in the PDF Viewer component
Summary
Denial-of-service in the PDF Viewer component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 16:49 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
155 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
155 , ≤ *
(rpm)
|
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CVE-2026-84137 (GCVE-0-2026-84137)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:24
VLAI
EPSS
VEX
Title
Spoofing issue in the DOM: Core & HTML component
Summary
Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 16:47 UTC
CWE
- CWE-451 - User Interface (UI) Misrepresentation of Critical Information
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84136 (GCVE-0-2026-84136)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:24
VLAI
EPSS
VEX
Title
Other issue in the DOM: Navigation component
Summary
Other issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 16:45 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84135 (GCVE-0-2026-84135)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:24
VLAI
EPSS
VEX
Title
Other issue in Firefox Focus for Android
Summary
Other issue in Firefox Focus for Android. This vulnerability was fixed in Firefox 155.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 16:37 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
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CVE-2026-84134 (GCVE-0-2026-84134)
Vulnerability from nvd – Published: 2026-09-01 12:19 – Updated: 2026-09-03 17:24
VLAI
EPSS
VEX
Title
Other issue in the Profile Backup component
Summary
Other issue in the Profile Backup component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 16:30 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84133 (GCVE-0-2026-84133)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-03 17:24
VLAI
EPSS
VEX
Title
Site isolation issue in the DOM: Push Subscriptions component
Summary
Site isolation issue in the DOM: Push Subscriptions component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 16:13 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84132 (GCVE-0-2026-84132)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-03 17:24
VLAI
EPSS
VEX
Title
Information disclosure in the Networking: HTTP component
Summary
Information disclosure in the Networking: HTTP component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 16:12 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84131 (GCVE-0-2026-84131)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-02 03:55
VLAI
EPSS
VEX
Title
Privilege escalation due to invalid pointer in the Graphics component
Summary
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 00:00 UTC
CWE
- CWE-763 - Release of Invalid Pointer or Reference
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.40 , ≤ 115.*
(rpm)
Unaffected: 140.15 , ≤ 140.* (rpm) Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84130 (GCVE-0-2026-84130)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-03 17:24
VLAI
EPSS
VEX
Title
Information disclosure in the Graphics: WebGPU component
Summary
Information disclosure in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:42 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84129 (GCVE-0-2026-84129)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-02 15:49
VLAI
EPSS
VEX
Title
Site isolation issue in the DOM: Navigation component
Summary
Site isolation issue in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 15:47 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84128 (GCVE-0-2026-84128)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-02 03:55
VLAI
EPSS
VEX
Title
Privilege escalation in the WebDriver BiDi component
Summary
Privilege escalation in the WebDriver BiDi component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 00:00 UTC
CWE
- CWE-284 - Improper Access Control
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
155 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
155 , ≤ *
(rpm)
|
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CVE-2026-84127 (GCVE-0-2026-84127)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-01 14:59
VLAI
EPSS
VEX
Title
Information disclosure in the WebExtensions component in Firefox for Android
Summary
Information disclosure in the WebExtensions component in Firefox for Android. This vulnerability was fixed in Firefox 155.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 14:59 UTC
CWE
- CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
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CVE-2026-84126 (GCVE-0-2026-84126)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-01 21:32
VLAI
EPSS
VEX
Title
Incorrect boundary conditions in the Layout: Grid component
Summary
Incorrect boundary conditions in the Layout: Grid component. This vulnerability was fixed in Firefox 155 and Thunderbird 155.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 15:00 UTC
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
155 , ≤ *
(rpm)
|
|
| Mozilla | Thunderbird |
Unaffected:
155 , ≤ *
(rpm)
|
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CVE-2026-84125 (GCVE-0-2026-84125)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-01 21:44
VLAI
EPSS
VEX
Title
Use-after-free in the DOM: Core & HTML component
Summary
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 14:15 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84124 (GCVE-0-2026-84124)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-01 21:44
VLAI
EPSS
VEX
Title
Use-after-free in the DOM: Core & HTML component
Summary
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 15:00 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84123 (GCVE-0-2026-84123)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-02 03:55
VLAI
EPSS
VEX
Title
Privilege escalation due to use-after-free in the Graphics: WebGPU component
Summary
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 00:00 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84122 (GCVE-0-2026-84122)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-01 21:44
VLAI
EPSS
VEX
Title
Use-after-free in the Audio/Video component
Summary
Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 15:10 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84121 (GCVE-0-2026-84121)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-02 03:55
VLAI
EPSS
VEX
Title
Sandbox escape due to use-after-free in the DOM: Security component
Summary
Sandbox escape due to use-after-free in the DOM: Security component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 00:00 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.40 , ≤ 115.*
(rpm)
Unaffected: 140.15 , ≤ 140.* (rpm) Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84120 (GCVE-0-2026-84120)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-01 21:44
VLAI
EPSS
VEX
Title
Use-after-free in the Audio/Video component
Summary
Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 13:47 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.40 , ≤ 115.*
(rpm)
Unaffected: 140.15 , ≤ 140.* (rpm) Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84119 (GCVE-0-2026-84119)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-02 03:55
VLAI
EPSS
VEX
Title
Sandbox escape due to use-after-free in the DOM: Navigation component
Summary
Sandbox escape due to use-after-free in the DOM: Navigation component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 00:00 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
115.40 , ≤ 115.*
(rpm)
Unaffected: 140.15 , ≤ 140.* (rpm) Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
140.15 , ≤ 140.*
(rpm)
Unaffected: 153.2 , ≤ 153.* (rpm) Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84118 (GCVE-0-2026-84118)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-01 21:44
VLAI
EPSS
VEX
Title
Use-after-free in the JavaScript: GC component
Summary
Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 15:10 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Mozilla | Firefox |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
|
| Mozilla | Thunderbird |
Unaffected:
153.2 , ≤ 153.*
(rpm)
Unaffected: 155 , ≤ * (rpm) |
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CVE-2026-84117 (GCVE-0-2026-84117)
Vulnerability from nvd – Published: 2026-09-01 12:18 – Updated: 2026-09-02 03:55
VLAI
EPSS
VEX
Title
Privilege escalation in Firefox for Android
Summary
Privilege escalation in Firefox for Android. This vulnerability was fixed in Firefox 155.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 00:00 UTC
CWE
- CWE-284 - Improper Access Control
Assigner
References
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"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2053320"
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