Sophos flaws being used in attacks

CISA lists 7 flaws in Sophos products as being used in attacks, most recently on 6 Feb 2025. 2 have been used in ransomware.

What to do

1. Update every Sophos product you use.Install the updates Sophos offers, on every device, and restart when asked. Each flaw below has a fix or clear advice; that’s one of CISA’s conditions for listing it.
2. If someone looks after IT for you, send them this page.Many of these are in equipment you don’t see: routers, firewalls, servers, the office network. Ask them to confirm each one is fixed, or that you don’t use the product.
3. Check anything else in the lookup.Search any app, company or CVE. Not being on CISA’s list doesn’t mean safe: keep updating either way.

Every flaw, newest first

1. Being used in attacksUsed in ransomwareAdded by CISA on 6 Feb 2025
   Sophos CyberoamOS
   CVE-2020-29574CyberoamOS (CROS) SQL Injection Vulnerability
   CyberoamOS (CROS) contains a SQL injection vulnerability in the WebAdmin that allows an unauthenticated attacker to execute arbitrary SQL statements remotely.
   CISA’s required actionThe impacted product is end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue utilization of the product.
   CVE recordNVD
2. Being used in attacksAdded by CISA on 6 Feb 2025
   Sophos XG Firewall
   CVE-2020-15069Sophos XG Firewall Buffer Overflow Vulnerability
   Sophos XG Firewall contains a buffer overflow vulnerability that allows for remote code execution via the "HTTP/S bookmark" feature.
   CISA’s required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
   CVE recordNVD
3. Being used in attacksAdded by CISA on 16 Nov 2023
   Sophos Web Appliance
   CVE-2023-1671Sophos Web Appliance Command Injection Vulnerability
   Sophos Web Appliance contains a command injection vulnerability in the warn-proceed handler that allows for remote code execution.
   CISA’s required actionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
   CVE recordNVD
4. Being used in attacksAdded by CISA on 23 Sep 2022
   Sophos Firewall
   CVE-2022-3236Sophos Firewall Code Injection Vulnerability
   A code injection vulnerability in the User Portal and Webadmin of Sophos Firewall allows for remote code execution.
   CISA’s required actionApply updates per vendor instructions.
   CVE recordNVD
5. Being used in attacksAdded by CISA on 31 Mar 2022
   Sophos Firewall
   CVE-2022-1040Sophos Firewall Authentication Bypass Vulnerability
   An authentication bypass vulnerability in User Portal and Webadmin of Sophos Firewall allows for remote code execution.
   CISA’s required actionApply updates per vendor instructions.
   CVE recordNVD
6. Being used in attacksAdded by CISA on 25 Mar 2022
   Sophos SG UTM
   CVE-2020-25223Sophos SG UTM Remote Code Execution Vulnerability
   A remote code execution vulnerability exists in the WebAdmin of Sophos SG UTM.
   CISA’s required actionApply updates per vendor instructions.
   CVE recordNVD
7. Being used in attacksUsed in ransomwareAdded by CISA on 3 Nov 2021
   Sophos SFOS
   CVE-2020-12271Sophos SFOS SQL Injection Vulnerability
   Sophos Firewall operating system (SFOS) firmware contains a SQL injection vulnerability when configured with either the administration (HTTPS) service or the User Portal is exposed on the WAN zone. Successful exploitation may cause remote code execution to exfiltrate usernames and hashed passwords for the local device admin(s), portal admins, and user accounts used for remote access (but not external Active Directory or LDAP passwords).
   CISA’s required actionApply updates per vendor instructions.
   CVE recordNVD

From CISA’s Known Exploited Vulnerabilities catalog, updated 21 Oct 2026 (version 2026.10.21). CISA’s required actions are written for US government agencies. Sophos on CISA’s site.