Mozilla Firefox vulnerabilities

CVE-2025-9185 [HIGH] CWE-119 CVE-2025-9185: Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefo Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. 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

CVE-2025-14333 [HIGH] CWE-787 CVE-2025-14333: Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145. 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, Firefox ESR 140.6, Thunderbird 146, and Thunde

CVE-2016-9075 [CRITICAL] CWE-264 CVE-2016-9075: An issue where WebExtensions can use the mozAddonManager API to elevate privilege due to privileged An issue where WebExtensions can use the mozAddonManager API to elevate privilege due to privileged pages being allowed in the permissions list. This allows a malicious extension to then install additional extensions without explicit user permission. This vulnerability affects Firefox < 50.

CVE-2026-8093 [HIGH] CWE-119 CVE-2026-8093: Memory safety bugs present in Thunderbird 150.0.1. Some of these bugs showed evidence of memory corr Memory safety bugs present in Thunderbird 150.0.1. 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 150.0.2 and Thunderbird 150.0.2.

CVE-2016-2838 [HIGH] CWE-119 CVE-2016-2838: Heap-based buffer overflow in the nsBidi::BracketData::AddOpening function in Mozilla Firefox before Heap-based buffer overflow in the nsBidi::BracketData::AddOpening function in Mozilla Firefox before 48.0 and Firefox ESR 45.x before 45.3 allows remote attackers to execute arbitrary code via directional content in an SVG document.

CVE-2009-1828 [MEDIUM] CWE-399 CVE-2009-1828: Mozilla Firefox 3.0.10 allows remote attackers to cause a denial of service (infinite loop, applicat Mozilla Firefox 3.0.10 allows remote attackers to cause a denial of service (infinite loop, application hang, and memory consumption) via a KEYGEN element in conjunction with (1) a META element specifying automatic page refresh or (2) a JavaScript onLoad event handler for a BODY element. NOTE: it was later reported that earlier versions are also affec

CVE-2016-5278 [HIGH] CWE-119 CVE-2016-5278: Heap-based buffer overflow in the nsBMPEncoder::AddImageFrame function in Mozilla Firefox before 49. Heap-based buffer overflow in the nsBMPEncoder::AddImageFrame function in Mozilla Firefox before 49.0, Firefox ESR 45.x before 45.4, and Thunderbird < 45.4 allows remote attackers to execute arbitrary code via a crafted image data that is mishandled during the encoding of an image frame to an image.

CVE-2016-1968 [HIGH] CWE-189 CVE-2016-1968: Integer underflow in Brotli, as used in Mozilla Firefox before 45.0, allows remote attackers to exec Integer underflow in Brotli, as used in Mozilla Firefox before 45.0, allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow) via crafted data with brotli compression.

CVE-2023-5730 [CRITICAL] CWE-787 CVE-2023-5730: Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. Some of these b Memory safety bugs present in Firefox 118, Firefox ESR 115.3, and Thunderbird 115.3. 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 affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

CVE-2012-4185 [CRITICAL] CWE-119 CVE-2012-4185: Buffer overflow in the nsCharTraits::length function in Mozilla Firefox before 16.0, Firefox ESR 10. Buffer overflow in the nsCharTraits::length function in Mozilla Firefox before 16.0, Firefox ESR 10.x before 10.0.8, Thunderbird before 16.0, Thunderbird ESR 10.x before 10.0.8, and SeaMonkey before 2.13 allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) via unspecified vectors.

CVE-2017-7828 [CRITICAL] CWE-416 CVE-2017-7828: A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" A use-after-free vulnerability can occur when flushing and resizing layout because the "PressShell" object has been freed while still in use. This results in a potentially exploitable crash during these operations. This vulnerability affects Firefox < 57, Firefox ESR < 52.5, and Thunderbird < 52.5.

CVE-2020-6463 [MEDIUM] firefox vulnerabilities firefox vulnerabilities Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass iframe sandbox restrictions, confuse the user, or execute arbitrary code. (CVE-2020-6463, CVE-2020-6514, CVE-2020-15652, CVE-2020-15653, CVE-2020-15654, CVE-2020-15656, CVE-2020-15658, CVE-2020-1565

CVE-2024-9394 [HIGH] CWE-79 CVE-2024-9394: An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under th An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the `resource://devtools` origin. This could allow them to access cross-origin JSON content. This access is limited to "same site" documents by the Site Isolation feature on desktop clients, but full cross-origin access is possible on Android versions. This

CVE-2024-9401 [CRITICAL] CWE-119 CVE-2024-9401: Memory safety bugs present in Firefox 130, Firefox ESR 115.15, Firefox ESR 128.2, and Thunderbird 12 Memory safety bugs present in Firefox 130, Firefox ESR 115.15, Firefox ESR 128.2, and Thunderbird 128.2. 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 affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thu

CVE-2024-8384 [CRITICAL] CWE-787 CVE-2024-8384: The JavaScript garbage collector could mis-color cross-compartment objects if OOM conditions were de The JavaScript garbage collector could mis-color cross-compartment objects if OOM conditions were detected at the right point between two passes. This could have led to memory corruption. This vulnerability affects Firefox < 130, Firefox ESR < 128.2, Firefox ESR < 115.15, Thunderbird < 128.2, and Thunderbird < 115.15.

CVE-2022-1887 [CRITICAL] CWE-89 CVE-2022-1887: The search term could have been specified externally to trigger SQL injection. This vulnerability af The search term could have been specified externally to trigger SQL injection. This vulnerability affects Firefox for iOS < 101.

CVE-2025-9179 [CRITICAL] CWE-119 CVE-2025-9179: An attacker was able to perform memory corruption in the GMP process which processes encrypted media An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This process is also heavily sandboxed, but represents slightly different privileges from the content process. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.1

CVE-2025-1016 [CRITICAL] CWE-787 CVE-2025-1016: Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, T Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 115.19, Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6. 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 135, Firefo

CVE-2025-8028 [CRITICAL] CWE-1332 CVE-2025-8028: On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far On arm64, a WASM `br_table` instruction with a lot of entries could lead to the label being too far from the instruction causing truncation and incorrect computation of the branch address. This vulnerability was fixed in Firefox 141, Firefox ESR 115.26, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1

CVE-2025-1017 [CRITICAL] CWE-787 CVE-2025-1017: Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6 Memory safety bugs present in Firefox 134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6. 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 135, Firefox ESR 128.7, Thunderbird 128.7, and Thun