Mozilla Firefox vulnerabilities

CVE-2025-55029 [HIGH] CWE-400 CVE-2025-55029: Malicious scripts could bypass the popup blocker to spam new tabs, potentially resulting in denial o Malicious scripts could bypass the popup blocker to spam new tabs, potentially resulting in denial of service attacks. This vulnerability was fixed in Firefox for iOS 142.

CVE-2026-6773 [HIGH] CWE-190 CVE-2026-6773: Denial-of-service due to integer overflow in the Graphics: WebGPU component. This vulnerability was Denial-of-service due to integer overflow in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVE-2026-6781 [HIGH] CWE-400 CVE-2026-6781: Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 15 Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVE-2026-6780 [HIGH] CWE-400 CVE-2026-6780: Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 15 Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

CVE-2025-10535 [HIGH] CWE-200 CVE-2025-10535: Information disclosure, mitigation bypass in the Privacy component in Firefox for Android. This vuln Information disclosure, mitigation bypass in the Privacy component in Firefox for Android. This vulnerability was fixed in Firefox 143.

CVE-2026-16409 [HIGH] CWE-824 CVE-2026-16409: Invalid pointer in the Security: PSM component. This vulnerability was fixed in Firefox 153 and Thun Invalid pointer in the Security: PSM component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

CVE-2016-1945 [HIGH] CVE-2016-1945: The nsZipArchive function in Mozilla Firefox before 44.0 might allow remote attackers to cause a den The nsZipArchive function in Mozilla Firefox before 44.0 might allow remote attackers to cause a denial of service or possibly have unspecified other impact by leveraging incorrect use of a pointer during processing of a ZIP archive.

CVE-2010-0174 [CRITICAL] CVE-2010-0174: Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.0.19, 3.5.x b Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.0.19, 3.5.x before 3.5.9, and 3.6.x before 3.6.2; Thunderbird before 3.0.4; and SeaMonkey before 2.0.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2025-11153 [HIGH] CWE-94 CVE-2025-11153: JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 143.0.3.

CVE-2016-2815 [HIGH] CWE-119 CVE-2016-2815: Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 47.0 allow remo Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 47.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2011-0053 [CRITICAL] CVE-2011-0053: Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.5.17 and 3.6. Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.5.17 and 3.6.x before 3.6.14, Thunderbird before 3.1.8, and SeaMonkey before 2.0.12 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2006-2777 [HIGH] CVE-2006-2777: Unspecified vulnerability in Mozilla Firefox before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote Unspecified vulnerability in Mozilla Firefox before 1.5.0.4 and SeaMonkey before 1.0.2 allows remote attackers to execute arbitrary code by using the nsISelectionPrivate interface of the Selection object to add a SelectionListener and create notifications that are executed in a privileged context.

CVE-2011-3651 [CRITICAL] CVE-2011-3651: Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox 7.0 and Thunderbird 7. Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox 7.0 and Thunderbird 7.0 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2005-2270 [HIGH] CVE-2005-2270: Firefox before 1.0.5 and Mozilla before 1.7.9 does not properly clone base objects, which allows rem Firefox before 1.0.5 and Mozilla before 1.7.9 does not properly clone base objects, which allows remote attackers to execute arbitrary code by navigating the prototype chain to reach a privileged object.

CVE-2016-2797 [HIGH] CWE-119 CVE-2016-2797: The graphite2::TtfUtil::CmapSubtable12Lookup function in Graphite 2 before 1.3.6, as used in Mozilla The graphite2::TtfUtil::CmapSubtable12Lookup function in Graphite 2 before 1.3.6, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to cause a denial of service (buffer over-read) or possibly have unspecified other impact via a crafted Graphite smart font, a different vulnerability than CVE-2016-2801.

CVE-2011-2365 [CRITICAL] CVE-2011-2365: Unspecified vulnerability in the browser engine in Mozilla Firefox 3.6.x before 3.6.18 and Thunderbi Unspecified vulnerability in the browser engine in Mozilla Firefox 3.6.x before 3.6.18 and Thunderbird before 3.1.11 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors, a different vulnerability than CVE-2011-2364.

CVE-2012-4218 [CRITICAL] CWE-416 CVE-2012-4218: Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in Mozilla F Use-after-free vulnerability in the BuildTextRunsScanner::BreakSink::SetBreaks function in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

CVE-2013-1681 [CRITICAL] CWE-399 CVE-2013-1681: Use-after-free vulnerability in the nsContentUtils::RemoveScriptBlocker function in Mozilla Firefox Use-after-free vulnerability in the nsContentUtils::RemoveScriptBlocker function in Mozilla Firefox before 21.0, Firefox ESR 17.x before 17.0.6, Thunderbird before 17.0.6, and Thunderbird ESR 17.x before 17.0.6 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

CVE-2025-3029 [HIGH] CWE-290 CVE-2025-3029: A crafted URL containing specific Unicode characters could have hidden the true origin of the page, A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a potential spoofing attack. This vulnerability was fixed in Firefox 137, Firefox ESR 128.9, Thunderbird 137, and Thunderbird 128.9.

CVE-2012-4212 [CRITICAL] CWE-416 CVE-2012-4212: Use-after-free vulnerability in the XPCWrappedNative::Mark function in Mozilla Firefox before 17.0, Use-after-free vulnerability in the XPCWrappedNative::Mark function in Mozilla Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.