CVE-2025-6436

CVE-2025-6436 relates to memory safety bugs in Firefox 139 and Thunderbird 139 that could allow memory corruption and potentially run arbitrary code. Affected products are Firefox and Thunderbird versions before 140. The Mozilla advisories MFSA2025-54 and MFSA2025-51 describe the nature of the is...

CVE-2012-4208

CVE-2012-4208 affects Mozilla Firefox ≤ prior to 17.0, Thunderbird ≤ prior to 17.0, and SeaMonkey ≤ 2.13/2.14. The XrayWrapper did not consider compartment during property filtering, allowing remote sites to bypass chrome-only restrictions on reading DOM object properties. Impact per description:...

CVE-2017-7847

Mozilla Thunderbird prior to 52.5.2 is affected by CVE-2017-7847 through crafted CSS in an RSS feed that can leak local path strings (potentially including user names). The underlying issue is leakage via RSS processing of CSS. Impact is information disclosure; exploitation details are not provid...

CVE-2026-6746

This CVE (CVE-2026-6746) is a use-after-free in the DOM: Core & HTML component. The Initial document states it was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. Connected documents also reference Mozilla advisories tying this CVE to Firefox...

CVE-2012-4204

The CVE-2012-4204 entry describes a memory-corruption/remote-code-execution vulnerability in Mozilla Firefox’s JavaScript engine (str_unescape) affecting Firefox before 17.0, Thunderbird before 17.0, and SeaMonkey before 2.14, exploitable via unspecified vectors. Connected documents indicate rela...

CVE-2026-6747

CVE-2026-6747 is a use-after-free vulnerability in the WebRTC component. Technical details across connected advisories show this affects Firefox/Firefox ESR and Thunderbird suites, with fixes applied in Firefox 150 and ESR 140.10, and in Thunderbird 150 (also 140.10). Remediation per the linked a...

CVE-2013-0759

CVE-2013-0759 affects Mozilla Firefox (and related Mozilla components) prior to version 18.0, Firefox ESR prior to 10.0.12 and 17.0.2, Thunderbird prior to 17.0.2 and ESR prior to 10.0.12/17.0.2, and SeaMonkey prior to 2.15. The vulnerability allows remote attackers to spoof the address bar by ex...

CVE-2025-26696

CVE-2025-26696 affects Mozilla Thunderbird and is triggered by certain crafted MIME messages that claim to contain an encrypted OpenPGP message but actually contain an OpenPGP signed message, causing the UI to mis-display the content as encrypted. Public references in connected documents corrobor...

CVE-2013-0779

CVE-2013-0779 affects Mozilla Firefox (before 19.0), Thunderbird (before 17.0.3), and SeaMonkey (before 2.16). The issue is in nsCodingStateMachine::NextState, allowing remote attackers to execute arbitrary code or cause a denial of service via an out-of-bounds read. The connected OpenVAS/Nessus ...

CVE-2017-7757

CVE-2017-7757 is a use-after-free vulnerability in IndexedDB that can occur when an IndexedDB object is destroyed while a method on it is executing, potentially causing a crash. Affected products include Firefox versions before 54, Firefox ESR before 52.2, and Thunderbird before 52.2. The issue a...

CVE-2026-12289

CVE-2026-12289 describes a privilege-escalation vulnerability in the Graphics: WebRender component. The public description and connected advisories indicate this affects Mozilla Firefox and Thunderbird products, with fixes shipped in: Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbi...

CVE-2006-6503

CVE-2006-6503: Affected Mozilla Firefox 2.x before 2.0.0.1, Mozilla Firefox 1.5.x before 1.5.0.9, Mozilla Thunderbird before 1.5.0.9, and SeaMonkey before 1.0.7. The issue allows bypassing cross-site scripting (XSS) protection by changing the src attribute of an IMG element to a javascript: URI. ...

CVE-2025-8027

CVE-2025-8027 describes a 64-bit value handling bug in the Firefox/Thunderbird JavaScript engines: on 64-bit platforms IonMonkey-JIT writes only 32 bits of a 64-bit return value to the stack, while Baseline-JIT reads all 64 bits. This can disclose or mishandle information in the return value spac...

CVE-2009-3981

CVE-2009-3981 affects Mozilla Firefox before 3.0.16, SeaMonkey before 2.0.1, and Thunderbird. The issue is an unspecified remote vulnerability in the browser engine that can cause memory corruption, leading to a crash or potentially arbitrary code execution via unknown vectors, and can result in ...

CVE-2012-5840

CVE-2012-5840 is a Use-after-free vulnerability in Mozilla Firefox’s nsTextEditorState::PrepareEditor, affecting Firefox prior to 17.0, Firefox ESR 10.x prior to 10.0.11, Thunderbird prior to 17.0, Thunderbird ESR 10.x prior to 10.0.11, and SeaMonkey prior to 2.14. The flaw allows remote attacker...

CVE-2017-7845

CVE-2017-7845 is a concrete vulnerability: a buffer overflow in ANGLE’s Direct3D 9 path used for WebGL rendering can crash the process. It affects Windows, and is listed against Thunderbird < 52.5.2, Firefox ESR < 52.5.2, and Firefox

CVE-2025-4092

The CVE-2025-4092 entry concerns memory safety bugs in Mozilla Firefox 137/Thunderbird 137 that reportedly could be exploited to execute arbitrary code. Affected products are Firefox and Thunderbird versions before 138. Root cause is memory safety/memory corruption in the browser components; Mozi...

CVE-2025-8030

CVE-2025-8030 is publicly known and tied to an insufficent escaping in the “Copy as cURL” feature that could lead to code execution. The connected Astra Linux and Amazon/Linux advisories confirm the issue affects Firefox and Thunderbird across multiple tracks (e.g., Firefox < 141, Firefox ESR ...

CVE-2010-0159

CVE-2010-0159 affects Mozilla-based browsers including Firefox 3.0.x (before 3.0.18) and 3.5.x (before 3.5.8), Thunderbird before 3.0.2, and SeaMonkey before 2.0.3. The vulnerability arises from memory-corruption in layout handling, specifically in nsBlockFrame::StealFrame and related vectors, al...

CVE-2012-4182

CVE-2012-4182 is a Use-after-free in Mozilla Firefox’s nsTextEditRules::WillInsert, affecting Firefox <= 16.0 and Firefox ESR <= 10.x <= 10.0.8, Thunderbird <= 16.0 and ESR 10.x <= 10.0.8, and SeaMonkey

CVE-2025-14321

The CVE-2025-14321 entry documents a Use-after-free in the WebRTC: Signaling component affecting Firefox before 146 and Firefox ESR before 140.6, and Thunderbird before 146/140.6. Public advisories (ALAS and Debian S/DLA notes) indicate memory-safety/allocations issues are part of the Firefox/Thu...

CVE-2026-6749

CVE-2026-6749 is an information disclosure vulnerability in the Graphics: Canvas2D component, caused by uninitialized memory. It affects Firefox and Thunderbird products; Mozilla advisories state fixes in Firefox 150, Firefox ESR 115.35 and 140.10, and Thunderbird 150 and 140.10. Amazon Linux 2 a...

CVE-2026-6766

CVE-2026-6766 affects NSS Libraries component. The issue is incorrect boundary conditions in NSS, with fixes landed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. Affected platforms include Firefox/Thunderbird releases; remediation is upgrading to the indicated versi...

CVE-2012-4180

CVE-2012-4180 : A heap-based buffer overflow in the nsHTMLEditor::IsPrevCharInNodeWhitespace function in Mozilla Firefox prior to 16.0 (and Firefox ESR 10.x prior to 10.0.8; Thunderbird prior to 16.0; Thunderbird ESR 10.x prior to 10.0.8; SeaMonkey prior to 2.13) could allow remote code execution...

CVE-2026-16349

CVE-2026-16349 : Same-origin policy bypass in the DOM: Navigation component affects Mozilla Firefox and Firefox ESR. Root cause is a bypass vulnerability in the Navigation component that can impact confidentiality, integrity, and availability (CVSS v3.1: 9.8, high) with network attack vector and ...

CVE-2026-6772

CVE-2026-6772 affects the NSS Libraries component, specifically an incorrect boundary condition in NSS Libraries. The vulnerability is exploitable via network access with no user interaction and no privileges required, with a CVSS v3.1 base score of 7.5 (High). Affected products/contexts include ...

CVE-2008-4061

CVE-2008-4061: An integer overflow in the MathML component of Mozilla Firefox can be triggered by an mtd element with a large rowspan value. Affects Firefox before 2.0.0.17 and 3.x before 3.0.2, Thunderbird before 2.0.0.17, and SeaMonkey before 1.1.12. Impact: remote memory corruption, denial of ...

CVE-2012-3968

CVE-2012-3968 is a use-after-free in Firefox’s WebGL implementation related to deletion of a fragment shader by its accessor. The issue allows remote attackers to execute arbitrary code via crafted web content. Affected products include Mozilla Firefox (and Firefox ESR 10.x lineage) prior to patc...

CVE-2012-4216

CVE-2012-4216 is a use-after-free in gfxFont::GetFontEntry affecting Mozilla Firefox before 17.0, Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0, Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14. Exploitation could lead to remote code execution or a denial of service via h...

CVE-2025-8034

CVE-2025-8034 involves memory safety bugs in Mozilla Firefox/Thunderbird across multiple releases (Firefox ESR 115.25, 128.12; Firefox/Thunderbird 140.x; ESR 115.26, 128.13, 140.1). Some bugs show memory corruption and could potentially be exploited to run arbitrary code. Affected products list i...

CVE-2012-5833

CVE-2012-5833 concerns WebGL texImage2D handling in Mozilla Firefox (and related Gecko-based products) that interacts with Mesa drivers. The vulnerability can allow remote code execution or a denial of service (memory corruption) via certain level parameter values. Affected versions include Firef...

CVE-2012-5838

CVE-2012-5838 affects the WebGL copyTexImage2D in Mozilla Firefox (<17.0), Thunderbird (<17.0), and SeaMonkey (

CVE-2013-0771

CVE-2013-0771 describes a heap-based buffer overflow in Mozilla Firefox’s gfxTextRun::ShrinkToLigatureBoundaries, affecting Firefox before 18.0 (and ESR 17.x before 17.0.1), Thunderbird before 17.0.2 (and ESR 17.x before 17.0.1), and SeaMonkey before 2.15. Successful exploitation via a crafted do...

CVE-2025-3033

CVE-2025-3033 affects Firefox on Windows (Thunderbird also affected per the entry), with exploitation involving selecting a malicious Windows .url shortcut from the local file system to upload an unexpected file. Affected versions are Firefox < 137 and Thunderbird

CVE-2025-3034

CVE-2025-3034 corresponds to memory-safety bugs in Firefox 136 and Thunderbird 136. Some flaws show memory corruption and could be exploitable with enough effort to run arbitrary code. Affected products are Firefox < 137 and Thunderbird

CVE-2008-4067

CVE-2008-4067 describes a directory traversal vulnerability in Mozilla Firefox (before 2.0.0.17 and 3.x before 3.0.2), Thunderbird (before 2.0.0.17), and SeaMonkey (before 1.1.12) on Linux. An attacker could read arbitrary files via a resource: URI containing .. and URL-encoded / sequences. The c...

CVE-2012-3956

CVE-2012-3956 is a use-after-free in MediaStreamGraphThreadRunnable::Run in Mozilla Firefox before 15.0 (and similar affected versions for Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0/ESR 10.x before 10.0.7, SeaMonkey before 2.12). Successful exploitation could allow remote attackers t...

CVE-2012-4215

CVE-2012-4215 is a use-after-free in Mozilla Firefox’s nsPlaintextEditor::FireClipboardEvent that could allow remote code execution or a heap memory corruption, affecting Firefox before 17.0, Firefox ESR before 10.0.11, Thunderbird before 17.0, Thunderbird ESR before 10.0.11, and SeaMonkey before...

CVE-2025-8035

CVE-2025-8035 affects Mozilla Firefox and Thunderbird desktop clients (Firefox/Firefox ESR and Thunderbird up to versions around 140.x/141.x). The connected sources describe memory-safety bugs in Firefox ESR 128.12, 140.0, and Firefox/Thunderbird 140, plus similar issues in Thunderbird ESR lines,...

CVE-2025-8033

The CVE-2025-8033 issue is a memory-safety bug in Mozilla’s JavaScript engine where closing generators could be resumed, causing a null pointer dereference. Affected products include Firefox and Thunderbird forks across multiple release lines (Firefox < 141, ESR tracks <115.26, <128.13, ...

CVE-2025-9180

CVE-2025-9180 describes a same-origin policy bypass in the Graphics: Canvas2D component affecting Firefox and Thunderbird. Affected versions include Firefox and Thunderbird before 142, and ESR channels before 115.27, 128.14, or 140.2. Several connected advisories confirm the same issue and provid...

CVE-2012-5835

CVE-2012-5835 describes an integer overflow in the WebGL subsystem of Mozilla Firefox prior to 17.0 (also affecting Firefox ESR 10.x before 10.0.11, Thunderbird before 17.0 and Thunderbird ESR 10.x before 10.0.11, and SeaMonkey before 2.14). The overflow can lead to remote code execution or a den...

CVE-2025-9185

CVE-2025-9185 is a memory-safety issue affecting Firefox and Thunderbird components across Firefox/Thunderbird releases up to version 142 (Firefox <142, ESR <115.27/128.14/140.2; Thunderbird

CVE-2008-4058

CVE-2008-4058 affects Mozilla-based products (Firefox, SeaMonkey, Thunderbird) where XPConnect could be abused to pollute XPCNativeWrappers via chrome XBL/chrome JS, enabling remote arbitrary-code execution with chrome privileges. Publicly documented affected ranges include Firefox before 2.0.0.1...

CVE-2008-4062

Summary: CVE-2008-4062 covers multiple /unspecified / vulnerabilities in Mozilla Firefox (before 2.0.0.17 and 3.x before 3.0.2), Thunderbird (before 2.0.0.17), and SeaMonkey (before 1.1.12). The flaws involve the JavaScript engine and are triggered by vectors related to (1) misinterpretation of N...

CVE-2012-5839

CVE-2012-5839 is a heap-based buffer overflow in Mozilla's gfxShapedWord::CompressedGlyph::IsClusterStart that affects Firefox and related Mozilla components. Affected software includes Mozilla Firefox before 17.0 (and ESR 10.x before 10.0.11), Thunderbird before 17.0 (and ESR 10.x before 10.0.11...

CVE-2018-18513

CVE-2018-18513 is a Firefox/Thunderbird vulnerability where a crash can occur while processing a crafted S/MIME message or an XPI package with a crafted signature, allowing a denial-of-service attack as Thunderbird reopens the last seen message on restart and re-triggers the crash. Affected produ...

CVE-2025-1942

The CVE-2025-1942 vulnerability affects Mozilla Firefox (<136) and Mozilla Thunderbird (

CVE-2025-4084

CVE-2025-4084 concerns Firefox products. The issue arises from insufficient escaping of special characters in the copy as cURL feature, which could mislead users into running a crafted command and potentially enable local code execution on Windows. Affected software includes Firefox for Windows, ...

CVE-2025-8029

CVE-2025-8029: Thunderbird and Firefox products are affected by a vulnerability where javascript: URLs are executed when used inside object and embed tags. The impact list states affected versions include Firefox < 141 and Thunderbird < 141 (and ESR branches