TH
Product
Thunderbird
by Mozilla · last CVE Sep 30, 2026
On CISA KEVExploited in the wildRansomware-linked
2,073
CVEs
14
On KEV
10.0
Max CVSS
77
New 30D
Severity mix
Critical 379High 120Medium 1Low 0
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Add Thunderbird to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-100763
9.1
0%
Sep 29
Incorrect boundary conditions in the Graphics: WebGPU component
Affected: before 157.0
CVE-2026-92240
9.1
1%
Sep 15
Out-of-bounds read in IMAP response parser
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92079
9.1
0%
Sep 15
Mitigation bypass in the Widget: Win32 component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92075
9.1
0%
Sep 15
Mitigation bypass in the Networking component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92057
9.1
0%
Sep 15
Mitigation bypass in the Enterprise Policies component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92051
9.1
1%
Sep 15
Spoofing issue due to invalid pointer in the Graphics component
Affected: before 156.0
CVE-2026-92050
9.1
0%
Sep 15
Sandbox escape due to race condition in the XPConnect component
Affected: before 156.0
CVE-2026-92041
9.1
0%
Sep 15
Mitigation bypass in the DOM: Networking component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92038
9.1
0%
Sep 15
Mitigation bypass in the Remote Settings Client component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92034
9.1
0%
Sep 15
Site isolation issue in the Graphics component
Affected: before 156.0
CVE-2026-84639
9.1
0%
Sep 1
Uninitialized memory in MIME parsing
Affected: before 140.15.0; 141.0 before 153.2.0; 154.0 before 155.0
CVE-2026-74986
9.1
1%
Aug 18
Site isolation issue in the CSS Parsing and Computation component
Affected: before 153.1.0
CVE-2026-74961
9.1
0%
Aug 18
Side-channel in the Web Audio component
Affected: before 153.1.0; before 153.1.0
CVE-2026-74956
9.1
0%
Aug 18
Same-origin policy bypass in the DOM: Service Workers component
Affected: before 153.1.0; before 154.0
CVE-2026-74938
9.1
0%
Aug 18
Mitigation bypass in the JavaScript: GC component
Affected: before 153.1.0; before 154.0
CVE-2026-74959
9.1
0%
Aug 18
Mitigation bypass in the Storage: Cache API component
Affected: before 140.14.0; 141.0 before 153.1.0
CVE-2026-16359
9.1
0%
Jul 21
Incorrect boundary conditions in the Audio/Video: GMP component
Affected: before 140.13.0; 141.0 before 153.0
CVE-2026-16393
9.1
1%
Jul 21
Incorrect boundary conditions in the Graphics: WebGPU component
Affected: before 153.0
CVE-2026-16392
9.1
1%
Jul 21
JIT miscompilation in the JavaScript Engine: JIT component
Affected: before 153.0
CVE-2026-16390
9.1
0%
Jul 21
Mitigation bypass in the Enterprise Policies component
Affected: before 140.13.0; 141.0 before 153.0
CVE-2026-16381
9.1
0%
Jul 21
Same-origin policy bypass in the Networking: DNS component
Affected: before 140.13.0; 141.0 before 153.0
CVE-2026-16380
9.1
0%
Jul 21
Mitigation bypass in the Networking component
Affected: before 153.0
CVE-2026-16370
9.1
0%
Jul 21
Mitigation bypass in the DOM: Networking component
Affected: before 153.0
CVE-2026-16364
9.1
0%
Jul 21
Incorrect boundary conditions in the Audio/Video: Playback component
Affected: before 153.0
CVE-2026-12316
9.1
0%
Jun 16
Mitigation bypass in the DOM: Security component
Affected: before 152.0.0
CVE-2026-12315
9.1
0%
Jun 16
Mitigation bypass in the DOM: Security component
Affected: before 140.12.0; before 152.0.0
CVE-2026-12304
9.1
0%
Jun 16
Same-origin policy bypass in the Networking: Cookies component
Affected: before 140.12.0; before 152.0.0
CVE-2026-8948
9.1
0%
May 19
Same-origin policy bypass in the DOM: Networking component
Affected: before 151.0.0
CVE-2026-4724
9.1
1%
Mar 24
Undefined behavior in the Audio/Video component
Affected: before 149.0
CVE-2026-2806
9.1
0%
Feb 24
Uninitialized memory in the Graphics: Text component
Affected: before 148.0
CVE-2025-8037
9.1
0%
Jul 22
Setting a nameless cookie with an equals sign in the value shadowed other cookies
Affected: before 140.1; before 141.0
CVE-2025-4083
9.1
0%
Apr 29
A process isolation vulnerability in Thunderbird stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process…
Affected: before 128.10.0; before 138.0
CVE-2024-11705
9.1
1%
Nov 26
`NSC_DeriveKey` inadvertently assumed that the `phKey` parameter is always non-NULL
Affected: before 133.0
CVE-2017-7758
9.1
3%
Jun 11
An out-of-bounds read vulnerability with the Opus encoder when the number of channels in an audio stream changes while the encoder is in use
Affected: before 52.2.0
CVE-2017-7753
9.1
3%
Jun 11
An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data
Affected: before 52.3.0
CVE-2017-5465
9.1
18%
Jun 11
An out-of-bounds read while processing SVG content in "ConvolvePixel"
Affected: before 52.1.0
CVE-2017-5447
9.1
17%
Jun 11
An out-of-bounds read during the processing of glyph widths during text layout
Affected: before 52.1.0
CVE-2014-1508
9.1
4%
Mar 19
The libxul.so!gfxContext::Polygon function in Mozilla Firefox before 28.0, Firefox ESR 24.x before 24.4, Thunderbird before 24.4, and SeaMonkey before 2.25 allows remote attackers…
Affected: before 24.4
CVE-2026-92048
9.0
0%
Sep 15
Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-100832
8.8
0%
Sep 29
Use-after-free in the Graphics: Canvas2D component
Affected: before 140.17.0; 141.0 before 153.4.0
CVE-2026-100831
8.8
0%
Sep 29
Use-after-free in the DOM: UI Events & Focus Handling component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100825
8.8
0%
Sep 29
Use-after-free in the JavaScript Engine: JIT component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100824
8.8
0%
Sep 29
Privilege escalation in the Places component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100820
8.8
0%
Sep 29
Privilege escalation in the Address Bar component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100815
8.8
0%
Sep 29
Use-after-free in the CSS Parsing and Computation component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100814
8.8
0%
Sep 29
Incorrect boundary conditions in the JavaScript Engine: JIT component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100813
8.8
0%
Sep 29
Invalid pointer in the JavaScript Engine: JIT component
Affected: before 157.0
CVE-2026-100808
8.8
0%
Sep 29
Mitigation bypass in the DOM: Service Workers component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100807
8.8
0%
Sep 29
Privilege escalation in the DOM: Service Workers component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100801
8.8
0%
Sep 29
Privilege escalation in the DLL Services component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
Page 8 of 10 · 500 total
The 500 most important CVEs for this product (exploited first, then by severity)