VendorsMozillathunderbirdall versions
Vulnerabilities

Mozilla Thunderbird

Ranked by severity, then by exploit likelihood. Click a CVE ID for its full record.

1919CVEs
CVE-2026-16407
Mitigation bypass in the DOM: Service Workers component
Published 2026-07-21 · Analyzed
9.8EPSS 0.003
CVE-2025-8038
CSP frame-src was not correctly enforced for paths
Published 2025-07-22 · Modified
9.8EPSS 0.002
CVE-2026-2790
Same-origin policy bypass in the Networking: JAR component
Published 2026-02-24 · Modified
9.8EPSS 0.002
CVE-2026-16358
Site isolation issue in the Graphics: WebRender component
Published 2026-07-21 · Analyzed
9.8EPSS 0.002
CVE-2026-16349
Same-origin policy bypass in the DOM: Navigation component
Published 2026-07-21 · Analyzed
9.8EPSS 0.002
CVE-2026-16375
Site isolation issue in the Networking: HTTP component
Published 2026-07-21 · Analyzed
9.8EPSS 0.002
CVE-2026-84137
Spoofing issue in the DOM: Core & HTML component
Published 2026-09-01 · Modified
9.8EPSS 0.002
CVE-2026-16387
Site isolation issue in the Networking component
Published 2026-07-21 · Analyzed
9.8EPSS 0.002
CVE-2022-26486
An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.
Published 2022-12-22 · Analyzed
9.6KEVEPSS 0.023
CVE-2022-26384
If an attacker could control the contents of an iframe sandboxed with <code>allow-popups</code> but not <code>allow-scripts</code>, they were able to craft a link that, when clicked, would lead to JavaScript execution in violation of the sandbox. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.
Published 2022-12-22 · Modified
9.6EPSS 0.009
CVE-2022-22759
If a document created a sandboxed iframe without <code>allow-scripts</code>, and subsequently appended an element to the iframe's document that e.g. had a JavaScript event handler - the event handler would have run despite the iframe's sandbox. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.
Published 2022-12-22 · Modified
9.6EPSS 0.007
CVE-2024-7519
Insufficient checks when processing graphics shared memory could have led to memory corruption. This could be leveraged by an attacker to perform a sandbox escape. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, Firefox ESR < 128.1, Thunderbird < 128.1, and Thunderbird < 115.14.
Published 2024-08-06 · Analyzed
9.6EPSS 0.006
CVE-2026-8953
Sandbox escape due to use-after-free in the Disability Access APIs component
Published 2026-05-19 · Analyzed
9.6EPSS 0.005
CVE-2026-7321
Sandbox escape due to incorrect boundary conditions in the WebRTC: Networking component
Published 2026-04-28 · Analyzed
9.6EPSS 0.004
CVE-2026-8959
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
Published 2026-05-19 · Analyzed
9.6EPSS 0.004
CVE-2026-12297
Sandbox escape due to incorrect boundary conditions in the Networking component
Published 2026-06-16 · Modified
9.6EPSS 0.004
CVE-2026-12295
Sandbox escape in the DOM: Navigation component
Published 2026-06-16 · Modified
9.6EPSS 0.004
CVE-2026-12296
Sandbox escape in the Security: Process Sandboxing component
Published 2026-06-16 · Modified
9.6EPSS 0.004
CVE-2026-12294
Sandbox escape in the DOM: Workers component
Published 2026-06-16 · Modified
9.6EPSS 0.004
CVE-2026-84119
Sandbox escape due to use-after-free in the DOM: Navigation component
Published 2026-09-01 · Analyzed
9.6EPSS 0.003
CVE-2026-84121
Sandbox escape due to use-after-free in the DOM: Security component
Published 2026-09-01 · Analyzed
9.6EPSS 0.003
CVE-2013-0758
Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 10.x before 10.0.12 and 17.x before 17.0.2, and SeaMonkey before 2.15 allow remote attackers to execute arbitrary JavaScript code with chrome privileges by leveraging improper interaction between plugin objects and SVG elements.
Published 2013-01-13 · Modified
9.32 PoCEPSS 0.734
CVE-2013-1690
Mozilla Firefox before 22.0, Firefox ESR 17.x before 17.0.7, Thunderbird before 17.0.7, and Thunderbird ESR 17.x before 17.0.7 do not properly handle onreadystatechange events in conjunction with page reloading, which allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted web site that triggers an attempt to execute data at an unmapped memory location.
Published 2013-06-26 · Analyzed
9.3KEV1 PoCEPSS 0.690
CVE-2013-0757
The Chrome Object Wrapper (COW) implementation in Mozilla Firefox before 18.0, Firefox ESR 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 17.x before 17.0.2, and SeaMonkey before 2.15 does not prevent modifications to the prototype of an object, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges by referencing Object.prototype.__proto__ in a crafted HTML document.
Published 2013-01-13 · Modified
9.32 PoCEPSS 0.609
CVE-2013-0753
Use-after-free vulnerability in the serializeToStream implementation in the XMLSerializer component in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and 17.x before 17.0.2, Thunderbird before 17.0.2, Thunderbird ESR 10.x before 10.0.12 and 17.x before 17.0.2, and SeaMonkey before 2.15 allows remote attackers to execute arbitrary code via crafted web content.
Published 2013-01-13 · Modified
9.31 PoCEPSS 0.513
CVE-2012-3993
The Chrome Object Wrapper (COW) implementation 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 does not properly interact with failures of InstallTrigger methods, which allows remote attackers to execute arbitrary JavaScript code with chrome privileges via a crafted web site, related to an "XrayWrapper pollution" issue.
Published 2012-10-10 · Modified
9.31 PoCEPSS 0.426
CVE-2020-26950
In certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions resulting in an exploitable use-after-free condition. This vulnerability affects Firefox < 82.0.3, Firefox ESR < 78.4.1, and Thunderbird < 78.4.2.
Published 2020-12-09 · Modified
9.3EPSS 0.423
CVE-2011-3659
Use-after-free vulnerability in Mozilla Firefox before 3.6.26 and 4.x through 9.0, Thunderbird before 3.1.18 and 5.0 through 9.0, and SeaMonkey before 2.7 might allow remote attackers to execute arbitrary code via vectors related to incorrect AttributeChildRemoved notifications that affect access to removed nsDOMAttribute child nodes.
Published 2012-02-01 · Modified
9.31 PoCEPSS 0.368
CVE-2010-3131
Untrusted search path vulnerability in Mozilla Firefox before 3.5.12 and 3.6.x before 3.6.9, Thunderbird before 3.0.7 and 3.1.x before 3.1.3, and SeaMonkey before 2.0.7 on Windows XP allows local users, and possibly remote attackers, to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse dwmapi.dll that is located in the same folder as a .htm, .html, .jtx, .mfp, or .eml file.
Published 2010-08-26 · Modified
9.32 PoCEPSS 0.229
CVE-2012-4186
Heap-based buffer overflow in the nsWaveReader::DecodeAudioData 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 via unspecified vectors.
Published 2012-10-10 · Modified
9.3EPSS 0.147
CVE-2012-4188
Heap-based buffer overflow in the Convolve3x3 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 via unspecified vectors.
Published 2012-10-10 · Modified
9.3EPSS 0.147
CVE-2010-1199
Integer overflow in the XSLT node sorting implementation in Mozilla Firefox 3.5.x before 3.5.10 and 3.6.x before 3.6.4, Thunderbird before 3.0.5, and SeaMonkey before 2.0.5 allows remote attackers to execute arbitrary code via a large text value for a node.
Published 2010-06-23 · Modified
9.32 PoCEPSS 0.114
CVE-2012-4202
Heap-based buffer overflow in the image::RasterImage::DrawFrameTo function in 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 allows remote attackers to execute arbitrary code via a crafted GIF image.
Published 2012-11-21 · Modified
9.3EPSS 0.111
CVE-2010-0167
The browser engine in Mozilla Firefox 3.0.x before 3.0.18, 3.5.x before 3.5.8, and 3.6.x before 3.6.2; Thunderbird before 3.0.2; and SeaMonkey before 2.0.3 allows remote attackers to cause a denial of service (memory corruption and application crash) and possibly execute arbitrary code via vectors related to (1) layout/generic/nsBlockFrame.cpp and (2) the _evaluate function in modules/plugin/base/src/nsNPAPIPlugin.cpp.
Published 2010-03-25 · Modified
9.31 PoCEPSS 0.105
CVE-2006-0749
nsHTMLContentSink.cpp in Mozilla Firefox and Thunderbird 1.x before 1.5 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unknown vectors involving a "particular sequence of HTML tags" that leads to memory corruption.
Published 2006-04-14 · Analyzed
9.3EPSS 0.105
CVE-2006-1730
Integer overflow in Mozilla Firefox and Thunderbird 1.x before 1.5.0.2 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0.1 allows remote attackers to execute arbitrary code via a large number in the CSS letter-spacing property that leads to a heap-based buffer overflow.
Published 2006-04-14 · Modified
9.3EPSS 0.103
CVE-2010-3179
Stack-based buffer overflow in the text-rendering functionality in Mozilla Firefox before 3.5.14 and 3.6.x before 3.6.11, Thunderbird before 3.0.9 and 3.1.x before 3.1.5, and SeaMonkey before 2.0.9 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a long argument to the document.write method.
Published 2010-10-21 · Modified
9.31 PoCEPSS 0.101
CVE-2010-2752
Integer overflow in an array class in Mozilla Firefox 3.5.x before 3.5.11 and 3.6.x before 3.6.7, Thunderbird 3.0.x before 3.0.6 and 3.1.x before 3.1.1, and SeaMonkey before 2.0.6 allows remote attackers to execute arbitrary code by placing many Cascading Style Sheets (CSS) values in an array, related to references to external font resources and an inconsistency between 16-bit and 32-bit integers.
Published 2010-07-30 · Modified
9.31 PoCEPSS 0.098
CVE-2006-1728
Unspecified vulnerability in Mozilla Firefox and Thunderbird 1.x before 1.5.0.2 and 1.0.x before 1.0.8, Mozilla Suite before 1.7.13, and SeaMonkey before 1.0.1 allows remote attackers to execute arbitrary code via unknown vectors related to the crypto.generateCRMFRequest method.
Published 2006-04-14 · Modified
9.3EPSS 0.095
CVE-2009-1392
The browser engine in Mozilla Firefox 3 before 3.0.11, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.17 allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via vectors related to (1) nsEventStateManager::GetContentState and nsNativeTheme::CheckBooleanAttr; (2) UnhookTextRunFromFrames and ClearAllTextRunReferences; (3) nsTextFrame::ClearTextRun; (4) IsPercentageAware; (5) PL_DHashTableFinish; (6) nsListBoxBodyFrame::GetNextItemBox; (7) AtomTableClearEntry, related to the atom table, DOM mutation events, and Unicode surrogates; (8) nsHTMLEditor::HideResizers; and (9) nsWindow::SetCursor, related to changing the cursor; and other vectors.
Published 2009-06-12 · Modified
9.3EPSS 0.093
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