Mozilla Firefox vulnerabilities
3,702 known vulnerabilities affecting mozilla/firefox.
Total CVEs
3,702
CISA KEV
15
actively exploited
Public exploits
126
Exploited in wild
34
Severity breakdown
CRITICAL981HIGH1095MEDIUM1343LOW68UNKNOWN215
Vulnerabilities
Page 29 of 186
CVE-2026-100769P3HIGHCVSS 8.8≥ 140.0.0, < 140.17.0≥ 153.0.0, < 153.4.0+1 more2026-09-29
CVE-2026-100769 [HIGH] CWE-416 CVE-2026-100769: Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
nvdmozilla
CVE-2026-100772P3HIGHCVSS 8.8≥ 140.0.0, < 140.17.0≥ 153.0, < 153.4.0+1 more2026-09-29
CVE-2026-100772 [HIGH] CWE-416 CVE-2026-100772: Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4,
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
nvdmozilla
CVE-2026-100776P3HIGHCVSS 8.8≥ 140.0.0, < 140.17.0≥ 153.0.0, < 153.4.0+1 more2026-09-29
CVE-2026-100776 [HIGH] CWE-416 CVE-2026-100776: Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR
Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, and Firefox ESR 140.17.
nvdmozilla
CVE-2026-92026P3HIGHCVSS 8.8fixed in 140.16.0≥ 141.0, < 153.3.0+1 more2026-09-15
CVE-2026-92026 [HIGH] CWE-416 CVE-2026-92026: Use-after-free in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR
Use-after-free in the Networking component. This vulnerability was fixed in Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-8970P3HIGHCVSS 8.8fixed in 140.11.0fixed in 151.0.02026-05-19
CVE-2026-8970 [HIGH] CWE-269 CVE-2026-8970: Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox
Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
nvdmozilla
CVE-2018-5163P3HIGHCVSS 8.1fixed in 60.0≥ unspecified, < 602018-06-11
CVE-2018-5163 [HIGH] CWE-281 CVE-2018-5163: If a malicious attacker has used another vulnerability to gain full control over a content process,
If a malicious attacker has used another vulnerability to gain full control over a content process, they may be able to replace the alternate data resources stored in the JavaScript Start-up Bytecode Cache (JSBC) for other JavaScript code. If the parent process then runs this replaced code, the executed script would be run with the parent process' privil
nvdosv
CVE-2026-100801P3HIGHCVSS 8.8fixed in 140.17.0≥ 141.0, < 153.4.0+1 more2026-09-29
CVE-2026-100801 [HIGH] CWE-269 CVE-2026-100801: Privilege escalation in the DLL Services component. This vulnerability was fixed in Firefox ESR 153.
Privilege escalation in the DLL Services component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 159, Firefox ESR 153.6, Thunderbird 159, Thunderbird 153.6, Firefox 157, and Firefox ESR 140.17.
nvdmozilla
CVE-2026-92021P3HIGHCVSS 8.8fixed in 140.16.02026-09-15
CVE-2026-92021 [HIGH] CWE-416 CVE-2026-92021: Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR
Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox ESR 140.16 and Thunderbird 140.16.
nvd
CVE-2026-92015P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92015 [HIGH] CWE-269 CVE-2026-92015: Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Fi
Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-100782P3HIGHCVSS 8.8fixed in 115.42.0≥ 116.0, < 140.17.0+2 more2026-09-29
CVE-2026-100782 [HIGH] CWE-119 CVE-2026-100782: Privilege escalation due to incorrect boundary conditions in the Graphics component. This vulnerabil
Privilege escalation due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.
nvdmozilla
CVE-2026-92010P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92010 [HIGH] CWE-120 CVE-2026-92010: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Th
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-92012P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92012 [HIGH] CWE-120 CVE-2026-92012: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Th
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-92020P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92020 [HIGH] CWE-120 CVE-2026-92020: Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This
Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-92011P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92011 [HIGH] CWE-120 CVE-2026-92011: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Th
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-92009P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92009 [HIGH] CWE-120 CVE-2026-92009: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Th
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-92008P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92008 [HIGH] CWE-120 CVE-2026-92008: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Th
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-92007P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92007 [HIGH] CWE-120 CVE-2026-92007: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Th
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2026-92013P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92013 [HIGH] CWE-120 CVE-2026-92013: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. Th
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla
CVE-2025-14861P3HIGHCVSS 8.8fixed in 146.0.12025-12-18
CVE-2025-14861 [HIGH] CWE-119 CVE-2025-14861: Memory safety bugs present in Firefox 146. Some of these bugs showed evidence of memory corruption a
Memory safety bugs present in Firefox 146. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 146.0.1.
nvd
CVE-2026-92017P3HIGHCVSS 8.8fixed in 115.41.0≥ 116.0, < 140.16.0+2 more2026-09-15
CVE-2026-92017 [HIGH] CWE-269 CVE-2026-92017: Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox
Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
nvdmozilla