CVE-2022-1040: Sophos Firewall Authentication Bypass Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-03-31. EPSS: 99.8% chance of exploitation in the next 30 days.

An authentication bypass vulnerability in the User Portal and Webadmin allows a remote attacker to execute code in Sophos Firewall version v18.5 MR3 and older.

Affected products

• Sophos SFOS: up to and including 18.5.3

Published 2022-03-25. Last modified 2026-06-17.