Known Exploited Vulnerability

CVE-2022-1040

Sophos Firewall Authentication Bypass Vulnerability

Past federal due date 37 public exploits Added 31 Mar 2022 Due 21 Apr 2022 · 1569 days ago
VendorSophos
ProductFirewall
WeaknessCWE-158
RansomwareNone confirmed

What the flaw is

An authentication bypass vulnerability in User Portal and Webadmin of Sophos Firewall allows for remote code execution.

Description as published by CISA. We have not independently reproduced it.

What CISA requires

Apply updates per vendor instructions.

This deadline is binding on US federal civilian agencies under BOD 22-01. It is not a legal deadline for anyone else, but it is a useful urgency signal — CISA sets it by how actively the flaw is being used, not by CVSS.

Public exploit code

37 public repositories referencing this CVE have been catalogued on GitHub. Treat this as a strong signal to prioritise patching, not as a verified working exploit — many such repositories are scanners, write-ups or forks rather than functional code.

Showing 8 of 37. Full list in the trickest/cve dataset.

Vendor advisories

Primary sources

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Source: CISA KEV catalog · last verified August 6, 2026. Rebuilt automatically twice a day.