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
Watch

Add Thunderbird to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-100797
8.8
0%
Sep 29
Privilege escalation due to use-after-free in the Graphics: WebRender component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100796
8.8
0%
Sep 29
Use-after-free in the JavaScript: WebAssembly component
Affected: before 157.0
CVE-2026-100791
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100790
8.8
0%
Sep 29
Use-after-free in the XSLT component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100789
8.8
0%
Sep 29
Use-after-free in the Graphics: Canvas2D component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100785
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100784
8.8
0%
Sep 29
Use-after-free in the Layout: Text and Fonts component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100782
8.8
0%
Sep 29
Privilege escalation due to incorrect boundary conditions in the Graphics component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100780
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: before 157.0; 140.0 before 140.17.0; 153.0 before 153.4.0
CVE-2026-100779
8.8
0%
Sep 29
Use-after-free in the XSLT component
Affected: before 157.0; 140.0 before 140.17.0; 153.0 before 153.4.0
CVE-2026-100777
8.8
0%
Sep 29
Use-after-free in the Graphics: Canvas2D component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100776
8.8
0%
Sep 29
Use-after-free in the JavaScript: WebAssembly component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100774
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100773
8.8
0%
Sep 29
Use-after-free in the Storage: IndexedDB component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100772
8.8
0%
Sep 29
Use-after-free in the DOM: Core & HTML component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100769
8.8
0%
Sep 29
Use-after-free in the JavaScript: WebAssembly component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100768
8.8
0%
Sep 29
Use-after-free in the Graphics: WebGPU component
Affected: before 157.0
CVE-2026-100767
8.8
0%
Sep 29
Use-after-free in the Networking: Cache component
Affected: 140.0 before 140.17.0; 153.0 before 153.4.0; 154.0 before 157.0
CVE-2026-100765
8.8
0%
Sep 29
Use-after-free in the JavaScript: WebAssembly component
Affected: before 153.4.0; 154.0 before 157.0
CVE-2026-100764
8.8
0%
Sep 29
Privilege escalation due to incorrect boundary conditions in the Graphics: WebGPU component
Affected: before 157.0
CVE-2026-100761
8.8
0%
Sep 29
Privilege escalation due to use-after-free in the Graphics: WebGPU component
Affected: before 157.0
CVE-2026-100757
8.8
0%
Sep 29
Use-after-free in the Widget component
Affected: before 140.17.0; 141.0 before 153.4.0; 154.0 before 157.0
CVE-2026-92076
8.8
0%
Sep 15
Incorrect boundary conditions in the Networking component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92074
8.8
0%
Sep 15
Mitigation bypass in the Popup Blocker component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92073
8.8
0%
Sep 15
Privilege escalation in the Enterprise Policies component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92067
8.8
0%
Sep 15
Use-after-free in the Widget: Gtk component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92065
8.8
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-2026-92064
8.8
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-2026-92062
8.8
0%
Sep 15
Privilege escalation in the Session Restore component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92060
8.8
0%
Sep 15
Use-after-free in the Internationalization component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92058
8.8
0%
Sep 15
Use-after-free in the Graphics component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92056
8.8
0%
Sep 15
Use-after-free in the Graphics: Text component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92055
8.8
0%
Sep 15
Privilege escalation in the DevTools component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92054
8.8
0%
Sep 15
Privilege escalation in the Memory component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92053
8.8
0%
Sep 15
Privilege escalation in the Graphics: CanvasWebGL component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92052
8.8
0%
Sep 15
Privilege escalation due to uninitialized memory in the Graphics: CanvasWebGL component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92049
8.8
0%
Sep 15
Use-after-free in the Widget: Win32 component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92047
8.8
0%
Sep 15
Privilege escalation in the Crash Reporting component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92046
8.8
0%
Sep 15
Use-after-free in the Graphics component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92043
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Audio/Video component
Affected: before 153.3.0; 154.0 before 156.0
CVE-2026-92040
8.8
0%
Sep 15
Use-after-free in the JavaScript: WebAssembly component
Affected: before 156.0
CVE-2026-92029
8.8
0%
Sep 15
Use-after-free in the SVG component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92028
8.8
0%
Sep 15
Use-after-free in the DOM: Core & HTML component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92027
8.8
0%
Sep 15
Use-after-free in the DOM: Streams component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92026
8.8
0%
Sep 15
Use-after-free in the Networking component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92025
8.8
0%
Sep 15
Use-after-free in the DOM: Navigation component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92024
8.8
0%
Sep 15
Use-after-free in the SVG component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92023
8.8
0%
Sep 15
Use-after-free in the XML component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92022
8.8
0%
Sep 15
Use-after-free in the DOM: HTML Parser component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92021
8.8
0%
Sep 15
Use-after-free in the JavaScript Engine: JIT component
Affected: before 140.16.0
Page 9 of 10 · 500 total
The 500 most important CVEs for this product (exploited first, then by severity)