CVE-2022-3236 — Sophos Firewall Code Injection Vulnerability

A code injection vulnerability in the User Portal and Webadmin allows a remote attacker to execute code in Sophos Firewall version v19.0 MR1 and older.

01What is this vulnerability?

A code injection vulnerability in the User Portal and Webadmin allows a remote attacker to execute code in Sophos Firewall version v19.0 MR1 and older.

02Affected products

Vendor	Product	Versions
Sophos	Sophos Firewall	unspecified, unspecified

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-09-23. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-09-23T12:50:13.000Z
• Last modified: 2025-10-21T23:15:34.699Z
• Added to CISA KEV: 2022-09-23
• BOD 22-01 due: 2022-10-14

09References

• www.sophos.com — https://www.sophos.com/en-us/security-advisories/sophos-sa-20220923-sfos-rce