CVE-2026-8401

CRITICAL

9.8CVSS v3

—CVSS v2

0.08% EPSS (exploit probability)

CWE-693CWE

Description

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.

CVSS v3 vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected routers (0)

No routers currently mapped to this CVE in our database.

External references

NIST NVD
MITRE CVE