CVE-2022-3236
Sophos Firewall Code Injection Vulnerability
Sophos Firewall
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.
Exploitation status
CISA Known Exploited Vulnerabilities
Listed by CISA on 23 September 2022. US federal agencies were required to remediate it by 14 October 2022.
EPSS — exploitation probability
FIRST puts the probability of exploitation activity in the next 30 days at 98.9%, which is higher than 99.9% of all scored vulnerabilities. EPSS is a forecast of activity, not a measure of severity, and it is rescored daily.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Frequently asked questions
Is CVE-2022-3236 being exploited by ransomware groups?
No ransomware group in this database is currently recorded as exploiting CVE-2022-3236.
What does CVE-2022-3236 affect?
CVE-2022-3236 affects Sophos Firewall. 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.
How severe is CVE-2022-3236?
CVE-2022-3236 is rated CRITICAL with a CVSS base score of 9.8. EPSS puts the probability of exploitation in the next 30 days at 98.9%, higher than 99.9% of all scored vulnerabilities. It is listed in the CISA Known Exploited Vulnerabilities catalog, with a federal remediation deadline of 14 October 2022.
How should organisations respond to CVE-2022-3236?
Apply the vendor patch for Sophos Firewall as the first priority, and treat any internet-facing instance as the most urgent. Because this vulnerability is associated with ransomware activity, also review whether the affected systems were reachable before patching, rather than assuming that patching alone closes the incident.