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CVE-2026-8401

9.8 critical SSVC exploitation: none Modified
NVD · CVE.org

Sandbox escape in the Profile Backup component. This vulnerability was fixed in Firefox 150.0.3, Firefox ESR 115.36, Firefox ESR 140.11, and Thunderbird 140.11.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 9.8 · mozillaNVD modified 2026-10-26 18:10

Affected (CPE criteria) 1

  • cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*

References 29