p PatchFirst

PatchFirst · Latest vulnerabilities

thunderbird vulnerabilities · Page 38

Vulnerabilities published for thunderbird in the last 30 days: 263. Listed in the KEV catalogue: 0.

Filter vulnerabilities
Clear filters

Vulnerabilities: 1304

  1. CVE-2026-4690

    Critical · CVSS 9.6EPSS 0.8%No fix published

    Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component

    Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

    Published Updated
  2. CVE-2026-4689

    Critical · CVSS 10EPSS 0.69%No fix published

    Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component

    Sandbox escape due to incorrect boundary conditions, integer overflow in the XPCOM component. This vulnerability was fixed in Firefox 149, Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

    Published Updated

Check your server

Check your installed stack and versions against the current vulnerability feeds.

Check your server →