CVE-2026-92060

A use-after-free vulnerability exists in the Internationalization component of Mozilla Firefox and Thunderbird . The issue has been addressed in Firefox 156 , Firefox ESR 153.3 , Thunderbird 156 , and Thunderbird 153.3 . Specific details regarding exploitation vectors or impacts are not provided ...

CVE-2009-3982

The CVE-2009-3982 entry concerns Mozilla Firefox 3.5.x before 3.5.6, SeaMonkey before 2.0.1, and Thunderbird, where exposure is via the JavaScript engine. The connected documents confirm a memory-corruption impact in the JS engine that could allow remote code execution or a crash, caused by unspe...

CVE-2026-4692

This CVE (CVE-2026-4692) is a confirmed issue in the Responsive Design Mode component, leading to sandbox escape. The primary affected product is Mozilla Firefox (and related ESR builds) with versions prior to the fixed releases: Firefox 149, Firefox ESR 115.34, and Firefox ESR 140.9; Thunderbird...

CVE-2026-92010

The Mozilla Firefox and Mozilla Thunderbird browsers/mail clients are vulnerable to privilege escalation due to incorrect boundary conditions within the Graphics: CanvasWebGL component. This vulnerability has been addressed in the following versions: Firefox 156 , Firefox ESR 115.41 , Firefox ESR...

CVE-2026-92024

Mozilla Firefox and Thunderbird are affected by a use-after-free vulnerability in the SVG component (CVE-2026-92024). This flaw can potentially impact the security of the browser and mail client. The vulnerability has been addressed in the following versions: Firefox 156 , Firefox ESR 115.41 , Fi...

CVE-2026-92028

A Use-after-free vulnerability exists in the DOM: Core & HTML component of the Mozilla Firefox and Thunderbird web browsers. This flaw was addressed in Firefox 156 , Firefox ESR 115.41 , Firefox ESR 140.16 , Firefox ESR 153.3 , Thunderbird 156 , Thunderbird 140.16 , and Thunderbird 153.3 . While ...

CVE-2012-4217

CVE-2012-4217 is a use-after-free in Mozilla Firefox <17.0, Thunderbird <17.0, and SeaMonkey

CVE-2013-0777

CVE-2013-0777 affects Mozilla Firefox, Thunderbird and SeaMonkey. The related openSUSE security update (openSUSE-SU-2013:0323-1) notes MFSA 2013-28 family fixes for Firefox/Thunderbird/SeaMonkey, including CVE-2013-0777, and lists fixed versions: Firefox 19.0, Thunderbird 17.0.3, SeaMonkey 2.16 (...

CVE-2017-7763

CVE-2017-7763 : On macOS OS X, default fonts render some Tibetan characters as whitespace, enabling spoofing when used in an IDN in the address bar. Affected products/versions (per connected docs): Firefox versions before 54, Firefox ESR before 52.2, and Thunderbird before 52.2. The issue is spec...

CVE-2026-12301

A memory safety bug exists in the Mozilla Firefox web browser and Thunderbird email client. The vulnerability involves operations escaping buffer boundaries in memory, which could allow a remote attacker to gain access to confidential data . This issue is addressed in Firefox 152 and Thunderbird ...

CVE-2026-12322

The Firefox web browser and Thunderbird email client are affected by a clickjacking vulnerability in the Widget: Gtk component. The issue stems from an incorrect limitation on the visible layers of the user interface, which could allow an attacker to cause service failures . This vulnerability ha...

CVE-2026-2767

CVE-2026-2767 is a use-after-free vulnerability in the JavaScript: WebAssembly component of Firefox/Thunderbird. Affected products include Firefox (Desktop) and Thunderbird with the WebAssembly implementation; the issue is addressed by fixes in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and...

CVE-2026-2777

CVE-2026-2777 is a privilege-escalation vulnerability in the Firefox/Thunderbird Messaging System component. The issue is fixed in Firefox 148, Firefox ESR 115.33/140.8, Thunderbird 148, and Thunderbird 140.8. Connected sources (Astra Linux, AWS advisories, Debian security notes) confirm the same...

CVE-2026-8962

A mitigation bypass exists in the DOM: Security component of the Firefox web browser and the Thunderbird email client. Exploiting this vulnerability could allow an attacker to access confidential data and compromise data integrity . This issue was resolved in Firefox 151 , Firefox ESR 140.11 , Th...

CVE-2026-92066

A sandbox escape vulnerability exists in the Profile Backup component of Firefox and Thunderbird . The vulnerability was addressed in Firefox 156 and Thunderbird 156 . While specific root cause technical details are not provided in the documents, the impact involves a potential escape from the ap...

CVE-2026-92067

A use-after-free vulnerability exists in the Widget: Gtk component of Mozilla Firefox , Firefox ESR , Thunderbird , and Thunderbird ESR . This flaw was addressed in Firefox versions 156 and 153.3 (ESR), and Thunderbird versions 156 and 153.3 (ESR). Exploitation details are not provided in the doc...

CVE-2026-12307

A memory safety bug has been identified and fixed in Firefox and Thunderbird . This vulnerability affects Firefox 152 , Firefox ESR 140.12 , Thunderbird 152 , and Thunderbird 140.12 . The issue was specifically addressed as a memory safety fix in the Thunderbird client. No specific technical deta...

CVE-2026-16376

CVE-2026-16376 describes a Denial-of-Service (DoS) vulnerability in the Graphics: WebGPU component. This flaw was addressed in Firefox 153 and Thunderbird 153 . While the technical root cause is not detailed in the provided documents, the vulnerability is associated with CWE-400 (Uncontrolled Res...

CVE-2026-2782

CVE-2026-2782 affects Firefox (Netmonitor component) and is fixed in Firefox 148 and Firefox ESR 140.8, also addressed in Thunderbird 148/140.8. The connected sources corroborate privilege-escalation via Netmonitor across Mozilla products and note remediation as upgrading to Firefox 148+/Thunderb...

CVE-2026-4729

Mozilla Firefox and Thunderbird versions 148 contain memory safety bugs that exhibit evidence of memory corruption. A specific vulnerability in the Firefox web browser involves copying buffers without checking the input data , which could allow a remote attacker to trigger a service failure or, w...

CVE-2026-8973

Memory safety bugs in Firefox 150 and Thunderbird 150 allow for memory corruption due to operations exceeding buffer boundaries. While the impact primarily involves potential service interruptions , it is presumed that with sufficient effort, these flaws could be exploited to achieve arbitrary co...

CVE-2026-92032

A sandbox escape vulnerability exists in the Graphics component of Mozilla Firefox and Mozilla Thunderbird due to an invalid pointer . This flaw allows for the execution of arbitrary code. Impacted versions include Firefox 156, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 1...

CVE-2026-92049

A use-after-free vulnerability exists in the Widget: Win32 component of Mozilla products. This issue impacts Firefox , Firefox ESR , Thunderbird , and Thunderbird ESR . The vulnerability was addressed in Firefox 156 , Firefox ESR 153.3 , Thunderbird 156 , and Thunderbird 153.3 . Documentation con...

CVE-2026-2775

CVE-2026-2775 is a mitigation bypass in the DOM: HTML Parser component. The initial description states a fix in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Connected sources (Astra Linux bulletin and Amazon Linux advisories) reiterate the same mitig...

CVE-2026-2780

CVE-2026-2780: Privilege escalation in the Netmonitor component of Firefox/Thunderbird. The vulnerability is fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8. Affected products include Firefox family and Thunderbird; root cause is in the Netmonitor component. Remedi...

CVE-2026-2802

A race condition exists in the JavaScript: GC component of the Mozilla Firefox web browser and Mozilla Thunderbird email client. The vulnerability stems from simultaneous execution using a shared resource with incorrect synchronization. If exploited, an attacker could gain access to confidential ...

CVE-2026-2804

A use-after-free vulnerability exists in the JavaScript: WebAssembly component of the Mozilla Firefox web browser and Mozilla Thunderbird email client. The root cause is a mix-up in the instructions responsible for freeing memory. An attacker could exploit this flaw to execute arbitrary code , ca...

CVE-2026-2806

CVE-2026-2806 involves an uninitialized memory issue in the Graphics: Text component of Firefox/Thunderbird. Affected products are Mozilla Firefox and Mozilla Thunderbird (before versions 148). Root cause per the documents is uninitialized memory in the Text rendering path, with a fix implemented...

CVE-2026-6778

Mozilla Firefox and Thunderbird are vulnerable to an invalid pointer (specifically a zero pointer ) in the Audio/Video: Playback component. Exploiting this vulnerability could allow an attacker to compromise the accessibility of protected information . This issue has been resolved in Firefox 150 ...

CVE-2026-92044

CVE-2026-92044 involves information disclosure in the Networking: HTTP component of Mozilla products. The vulnerability has been addressed in Firefox 156 , Firefox ESR 153.3 , Thunderbird 156 , and Thunderbird 153.3 . While technical details regarding the specific root cause are not provided in t...

CVE-2026-92056

A use-after-free vulnerability exists in the Graphics: Text component of Mozilla Firefox and Thunderbird . The flaw was addressed in Firefox versions 156 , Firefox ESR 153.3 , Thunderbird 156 , and Thunderbird 153.3 . No specific exploit details are provided in the documentation.

CVE-2017-7755

CVE-2017-7755 affects Mozilla Firefox and Thunderbird installers on Windows. The Firefox installer can be made to load malicious DLLs stored in the same directory as the installer, enabling privilege escalation when the installer runs with elevated privileges. Affected products/versions include F...

CVE-2026-100762

A use-after-free vulnerability in the DOM: Content Processes component of Firefox allows for a sandbox escape . This flaw has been addressed in the following versions: Firefox ESR 153.4 , Firefox 157 , Firefox ESR 115.42 , and Firefox ESR 140.17 . Technical details regarding the specific root cau...

CVE-2026-100781

A sandbox escape vulnerability exists in the Graphics: WebRender component due to incorrect boundary conditions . This issue affects multiple Mozilla products, including Firefox ESR 115.42 , Firefox ESR 140.17 , Firefox 157 , Thunderbird 140.17 , Thunderbird 153.4 , and Thunderbird 157 . The vuln...

CVE-2026-2769

A use-after-free vulnerability exists in the Storage: IndexedDB component of the Firefox browser and the Thunderbird email client. This flaw occurs because the software uses memory after it has been released, which could allow a remote attacker to induce a service failure . The issue is fixed in ...

CVE-2026-2801

CVE-2026-2801 concerns an issue in the JavaScript: WebAssembly component where incorrect boundary conditions were present. Affected software includes Mozilla Firefox and Mozilla Thunderbird; reports indicate the problem was fixed in Firefox 148 and Thunderbird 148. Some sources also reference Thu...

CVE-2026-92009

Mozilla Firefox and Thunderbird are affected by CVE-2026-92009, a privilege escalation vulnerability caused by incorrect boundary conditions within the Graphics: CanvasWebGL component. This security issue has been addressed in several releases, including Firefox 156 , Firefox ESR 115.41 , Firefox...

CVE-2026-92027

A use-after-free vulnerability exists in the DOM: Streams component of Mozilla Firefox and Thunderbird . The flaw allows for potential memory corruption or instability. This issue has been addressed in Firefox versions 156, ESR 115.41, ESR 140.16, and ESR 153.3, as well as Thunderbird versions 15...

CVE-2012-3983

CVE-2012-3983 affects Mozilla Firefox (pre-16.0), Thunderbird (pre-16.0), and SeaMonkey (pre-2.13). Reported memory safety vulnerabilities could cause memory corruption and crashes and potentially allow arbitrary code execution via unknown vectors. Remediation evidenced in connected documents inc...

CVE-2017-7765

CVE-2017-7765 corresponds to a Mark of the Web bypass on Windows when saving files with very long names, bypassing the security warning before running downloaded executables. Affected products include Firefox < 54, Firefox ESR < 52.2, and Thunderbird

CVE-2025-14327

CVE-2025-14327 is a spoofing vulnerability in the Downloads Panel component affecting Firefox < 146, Thunderbird < 146, Firefox ESR < 140.7, and Thunderbird

CVE-2026-0885

A use-after-free vulnerability exists in the JavaScript: GC component of the Mozilla Firefox and Thunderbird products. This memory safety issue can allow a remote attacker to execute arbitrary code on the affected system. The vulnerability affects versions of Firefox earlier than 147 and Firefox ...

CVE-2026-100787

A sandbox escape vulnerability exists in the XUL component affecting Mozilla Firefox and Thunderbird . The flaw allows for a sandbox escape, and the issue has been addressed in Firefox ESR 153.4 , Thunderbird 157 , Thunderbird 153.4 , and Firefox 157 . Exploitation details are not provided in the...

CVE-2026-2790

CVE-2026-2790 is a same-origin policy bypass in the Networking: JAR component affecting Firefox and Thunderbird. Connected sources confirm the issue and its remediation: Firefox versions 148 and ESR 140.8, as well as Thunderbird 148 and 140.8, include the fix. Astra Linux bulletin also cites the ...

CVE-2026-2799

CVE-2026-2799 is a use-after-free vulnerability in the DOM: Core & HTML components of Mozilla Firefox and Thunderbird. The issue, identified across multiple advisories, is resolved in Firefox 148 and Thunderbird 148. Public exploit activity is noted in connected sources. Affected products include...

CVE-2026-6775

The WebRTC component in Mozilla Firefox and Mozilla Thunderbird is vulnerable to incorrect boundary conditions, specifically involving the execution of operations outside of the buffer in memory. This vulnerability could allow an attacker to gain unauthorized access to protected information . The...

CVE-2026-8961

A spoofing issue exists in the Form Autofill component of the Firefox web browser and the Thunderbird email client. This vulnerability allows a malicious actor to potentially compromise data integrity and may facilitate authentication bypass through spearfishing . The issue is fixed in Firefox 15...

CVE-2026-8968

A Denial-of-Service (DoS) vulnerability exists in the Audio/Video: Web Codecs component due to an invalid pointer . This flaw can lead to service interruptions or program crashes. The vulnerability affects the Firefox web browser and Thunderbird email client. Remediation is available in Firefox 1...

CVE-2026-8972

The WebRTC: Audio/Video component in the Mozilla Firefox web browser and Mozilla Thunderbird email client is affected by a privilege escalation vulnerability caused by insecure privilege management . A remote attacker could exploit this flaw to cause service interruptions or achieve elevated priv...

CVE-2026-92013

Mozilla Firefox and Thunderbird are vulnerable to privilege escalation due to incorrect boundary conditions within the Graphics: CanvasWebGL component. This flaw impacts multiple versions of the software, including Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, and corres...