CVE DATABASE / CVE-2022-1040
CVE-2022-1040
Sophos Firewall Authentication Bypass Vulnerability
CVSS 9.8 · CRITICAL
⚠ CISA KEV — ACTIVELY EXPLOITED
On the CISA KEV catalog
Confirmed exploited in the wild. Added 2022-03-31.
Federal remediation due 2022-04-21.
Required action: Apply updates per vendor instructions.
Summary
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.
CVSS 3.1 breakdown
| Base score | 9.8 (CRITICAL) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Affected products
Sophos sfos
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References
- http://packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.html
- https://www.exploit-db.com/exploits/51006
- https://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rce
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-1040
Data: NIST NVD + CISA KEV. NVD last modified 2025-10-27. Always verify against the vendor advisory before acting.