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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CVECVSSEPSSPublishedSummary · affected versions
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
CVE-2026-92020
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92017
8.8
0%
Sep 15
Privilege escalation in the DOM: Service Workers component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92016
8.8
0%
Sep 15
Use-after-free in the Disability Access APIs component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92015
8.8
0%
Sep 15
Privilege escalation in the WebExtensions component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92014
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics component
Affected: before 140.16.0
CVE-2026-92013
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92012
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92011
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92010
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92009
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92008
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92007
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-92006
8.8
0%
Sep 15
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.16.0; 141.0 before 153.3.0; 154.0 before 156.0
CVE-2026-84128
8.8
0%
Sep 1
Privilege escalation in the WebDriver BiDi component
Affected: before 155.0
CVE-2026-84123
8.8
0%
Sep 1
Privilege escalation due to use-after-free in the Graphics: WebGPU component
Affected: before 153.2.0; 154.0 before 155.0
CVE-2026-84131
8.8
0%
Sep 1
Privilege escalation due to invalid pointer in the Graphics component
Affected: before 140.15.0; 141.0 before 153.2.0; 154.0 before 155.0
CVE-2026-74955
8.8
0%
Aug 18
Privilege escalation in the Request Handling component
Affected: before 153.1.0; before 154.0
CVE-2026-74952
8.8
0%
Aug 18
Privilege escalation in the Application Update component
Affected: before 154.0
CVE-2026-74950
8.8
0%
Aug 18
Privilege escalation in the Downloads API component
Affected: before 153.1.0; before 154.0
CVE-2026-74947
8.8
0%
Aug 18
Privilege escalation due to invalid pointer in the Graphics component
Affected: before 153.1.0; before 154.0
CVE-2026-74937
8.8
0%
Aug 18
Use-after-free in the JavaScript: GC component
Affected: before 153.1.0; before 154.0
CVE-2026-74969
8.8
0%
Aug 18
Race condition, use-after-free in the Layout: Text and Fonts component
Affected: before 140.14.0; 141.0 before 153.1.0
CVE-2026-74965
8.8
0%
Aug 18
Privilege escalation in the Shell Integration component
Affected: before 140.14.0; before 154.0; 153.0 before 153.1.0
CVE-2026-74953
8.8
0%
Aug 18
Privilege escalation in the Networking: Cookies component
Affected: before 140.14.0; 141.0 before 153.1.0
CVE-2026-74949
8.8
0%
Aug 18
Use-after-free in the Graphics: Canvas2D component
Affected: before 140.14.0; 141.0 before 153.1.0
CVE-2026-74946
8.8
0%
Aug 18
Information disclosure due to incorrect boundary conditions in the Graphics: CanvasWebGL component
Affected: before 140.14.0; 141.0 before 153.1.0
CVE-2026-74942
8.8
0%
Aug 18
Privilege escalation in the Remote Settings Client component
Affected: before 140.14.0; 141.0 before 153.1.0
CVE-2026-74941
8.8
0%
Aug 18
Privilege escalation in the Graphics: CanvasWebGL component
Affected: before 140.14.0; 141.0 before 153.1.0
CVE-2026-74939
8.8
0%
Aug 18
Privilege escalation in the DOM: Navigation component
Affected: before 140.14.0; 141.0 before 153.1.0
CVE-2026-74935
8.8
0%
Aug 18
Privilege escalation in the DOM: Networking component
Affected: before 140.14.0; 141.0 before 153.1.0
Page 2 of 3 · 120 total
The 500 most important CVEs for this product (exploited first, then by severity)