Mozilla Firefox vulnerabilities

CVE-2019-11710 [CRITICAL] CWE-787 CVE-2019-11710: Mozilla developers and community members reported memory safety bugs present in Firefox 67. Some of Mozilla developers and community members reported memory safety bugs present in Firefox 67. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code. This vulnerability affects Firefox < 68.

CVE-2015-4481 [LOW] CWE-362 CVE-2015-4481: Race condition in the Mozilla Maintenance Service in Mozilla Firefox before 40.0 and Firefox ESR 38. Race condition in the Mozilla Maintenance Service in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 on Windows allows local users to write to arbitrary files and consequently gain privileges via vectors involving a hard link to a log file during an update.

CVE-2024-0743 [HIGH] CWE-252 CVE-2024-0743: An unchecked return value in TLS handshake code could have caused a potentially exploitable crash. T An unchecked return value in TLS handshake code could have caused a potentially exploitable crash. This vulnerability affects Firefox < 122, Firefox ESR < 115.9, and Thunderbird < 115.9.

CVE-2016-2818 [HIGH] CWE-119 CVE-2016-2818: Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 47.0 and Firefo Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2010-3777 [CRITICAL] CWE-119 CVE-2010-3777: Unspecified vulnerability in Mozilla Firefox 3.6.x before 3.6.13 and Thunderbird 3.1.x before 3.1.7 Unspecified vulnerability in Mozilla Firefox 3.6.x before 3.6.13 and Thunderbird 3.1.x before 3.1.7 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.

CVE-2005-2701 [HIGH] CVE-2005-2701: Heap-based buffer overflow in Firefox before 1.0.7 and Mozilla Suite before 1.7.12 allows remote att Heap-based buffer overflow in Firefox before 1.0.7 and Mozilla Suite before 1.7.12 allows remote attackers to execute arbitrary code via an XBM image file that ends in a large number of spaces instead of the expected end tag.

CVE-2011-2981 [CRITICAL] CWE-16 CVE-2011-2981: The event-management implementation in Mozilla Firefox before 3.6.20, SeaMonkey 2.x, Thunderbird 3.x The event-management implementation in Mozilla Firefox before 3.6.20, SeaMonkey 2.x, Thunderbird 3.x before 3.1.12, and possibly other products does not properly select the context for script to run in, which allows remote attackers to bypass the Same Origin Policy or execute arbitrary JavaScript code with chrome privileges via a crafted web site.

CVE-2022-36319 [HIGH] CWE-1021 CVE-2022-36319: When combining CSS properties for overflow and transform, the mouse cursor could interact with diffe When combining CSS properties for overflow and transform, the mouse cursor could interact with different coordinates than displayed. This vulnerability affects Firefox ESR < 102.1, Firefox ESR < 91.12, Firefox < 103, Thunderbird < 102.1, and Thunderbird < 91.12.

CVE-2023-4055 [HIGH] CWE-120 CVE-2023-4055: When the number of cookies per domain was exceeded in `document.cookie`, the actual cookie jar sent When the number of cookies per domain was exceeded in `document.cookie`, the actual cookie jar sent to the host was no longer consistent with expected cookie jar state. This could have caused requests to be sent with some cookies missing. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.

CVE-2016-2794 [HIGH] CWE-119 CVE-2016-2794: The graphite2::TtfUtil::CmapSubtable12NextCodepoint function in Graphite 2 before 1.3.6, as used in The graphite2::TtfUtil::CmapSubtable12NextCodepoint 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.

CVE-2023-4583 [HIGH] CWE-754 CVE-2023-4583: When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was When checking if the Browsing Context had been discarded in `HttpBaseChannel`, if the load group was not available then it was assumed to have already been discarded which was not always the case for private channels after the private session had ended. This vulnerability affects Firefox < 117, Firefox ESR < 115.2, and Thunderbird < 115.2.

CVE-2010-1988 [CRITICAL] CVE-2010-1988: Mozilla Firefox 3.6.3 on Windows XP SP3 allows remote attackers to cause a denial of service (NULL p Mozilla Firefox 3.6.3 on Windows XP SP3 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via JavaScript code that performs certain string concatenation and substring operations, a different vulnerability than CVE-2009-1571.

CVE-2023-4051 [HIGH] CVE-2023-4051: A website could have obscured the full screen notification by using the file open dialog. This could A website could have obscured the full screen notification by using the file open dialog. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 116, Firefox ESR < 115.2, and Thunderbird < 115.2.

CVE-2022-45407 [HIGH] CWE-416 CVE-2022-45407: If an attacker loaded a font using <code>FontFace()</code> on a background worker, a use-after-free If an attacker loaded a font using FontFace() on a background worker, a use-after-free could have occurred, leading to a potentially exploitable crash. This vulnerability affects Firefox < 107.

CVE-2024-10458 [HIGH] CWE-281 CVE-2024-10458: A permission leak could have occurred from a trusted site to an untrusted site via `embed` or `objec A permission leak could have occurred from a trusted site to an untrusted site via `embed` or `object` elements. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.

CVE-2016-2834 [HIGH] CVE-2016-2834: Mozilla Network Security Services (NSS) before 3.23, as used in Mozilla Firefox before 47.0, allows Mozilla Network Security Services (NSS) before 3.23, as used in Mozilla Firefox before 47.0, allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unknown vectors.

CVE-2026-4727 [HIGH] CWE-400 CVE-2026-4727: Denial-of-service in the Libraries component in NSS. This vulnerability was fixed in Firefox 149 and Denial-of-service in the Libraries component in NSS. This vulnerability was fixed in Firefox 149 and Thunderbird 149.

CVE-2025-1931 [HIGH] CWE-416 CVE-2025-1931: It was possible to cause a use-after-free in the content process side of a WebTransport connection, It was possible to cause a use-after-free in the content process side of a WebTransport connection, leading to a potentially exploitable crash. This vulnerability was fixed in Firefox 136, Firefox ESR 115.21, Firefox ESR 128.8, Thunderbird 136, and Thunderbird 128.8.

CVE-2024-11702 [HIGH] CWE-838 CVE-2024-11702: Copying sensitive information from Private Browsing tabs on Android, such as passwords, may have ina Copying sensitive information from Private Browsing tabs on Android, such as passwords, may have inadvertently stored data in the cloud-based clipboard history if enabled. This vulnerability affects Firefox < 133 and Thunderbird < 133.

CVE-2026-16376 [HIGH] CWE-400 CVE-2026-16376: Denial-of-service in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Denial-of-service in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.