Sophos Sophos Firewall

Our sources currently list 17 known vulnerabilities affecting Sophos Sophos Firewall. 5 are rated critical severity. 3 of 17 are actively exploited according to CISA, the most recent added 6 February 2025.

Last updated: 22 July 2026, 20:35 AEST

No current ASD advisory names this product.That describes the Australian Signals Directorate’s publication record — it is not a statement that this product is free of vulnerabilities. See the list below.

Known vulnerabilities in Sophos Sophos Firewall, highest risk first.
CVESeverityExploitationPublishedSummary
CVE-2022-1040Critical (9.8)Actively exploitedAn 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.
CVE-2020-12271Critical (9.8)Actively exploited · ransomwareA SQL injection issue was found in SFOS 17.0, 17.1, 17.5, and 18.0 before 2020-04-25 on Sophos XG Firewall devices, as exploited in the wild in April 2020. This affected devices co…
CVE-2020-15069Critical (9.8)Actively exploitedSophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S Bookmarks feature for clientless access. Hotfix HF062020.1 was publishe…
CVE-2018-16117High (8.8)Elevated likelihood (44%)A shell escape vulnerability in /webconsole/Controller in Admin Portal of Sophos XG firewall 17.0.8 MR-8 allow remote authenticated attackers to execute arbitrary OS commands via s…
CVE-2020-17352High (8.8)No exploitation reportedTwo OS command injection vulnerabilities in the User Portal of Sophos XG Firewall through 2020-08-05 potentially allow an authenticated attacker to remotely execute arbitrary code.
CVE-2018-16118High (8.1)No exploitation reportedA shell escape vulnerability in /webconsole/APIController in the API Configuration component of Sophos XG firewall 17.0.8 MR-8 allows remote attackers to execute arbitrary OS comma…
CVE-2017-18014Medium (6.1)No exploitation reportedAn NC-25986 issue was discovered in the Logging subsystem of Sophos XG Firewall with SFOS before 17.0.3 MR3. An unauthenticated user can trigger a persistent XSS vulnerability foun…
CVE-2020-15504Critical (9.8)No exploitation reportedA SQL injection vulnerability in the user and admin web interfaces of Sophos XG Firewall v18.0 MR1 and older potentially allows an attacker to run arbitrary code remotely. The fix …
CVE-2018-16116High (8.8)No exploitation reportedSQL injection vulnerability in AccountStatus.jsp in Admin Portal of Sophos XG firewall 17.0.8 MR-8 allow remote authenticated attackers to execute arbitrary SQL commands via the "u…
CVE-2022-3226High (7.2)No exploitation reportedAn OS command injection vulnerability allows admins to execute code via SSL VPN configuration uploads in Sophos Firewall releases older than version 19.5 GA.
CVE-2022-0331Medium (5.3)No exploitation reportedAn information disclosure vulnerability in Webadmin allows an unauthenticated remote attacker to read the device serial number in Sophos Firewall version v18.5 MR2 and older.
CVE-2020-11503Critical (9.8)No exploitation reportedA heap-based buffer overflow in the awarrensmtp component of Sophos XG Firewall v17.5 MR11 and older potentially allows an attacker to run arbitrary code remotely.
CVE-2022-3696High (7.2)No exploitation reportedA post-auth code injection vulnerability allows admins to execute code in Webadmin of Sophos Firewall releases older than version 19.5 GA.
CVE-2022-3709Medium (6.8)No exploitation reportedA stored XSS vulnerability allows admin to super-admin privilege escalation in the Webadmin import group wizard of Sophos Firewall releases older than version 19.5 GA.
CVE-2022-3711Medium (4.3)No exploitation reportedA post-auth read-only SQL injection vulnerability allows users to read non-sensitive configuration database contents in the User Portal of Sophos Firewall releases older than versi…
CVE-2022-3710Low (2.7)No exploitation reportedA post-auth read-only SQL injection vulnerability allows API clients to read non-sensitive configuration database contents in the API controller of Sophos Firewall releases older t…
CVE-2022-3713High (8.8)No exploitation reportedA code injection vulnerability allows adjacent attackers to execute code in the Wifi controller of Sophos Firewall releases older than version 19.5 GA.

Vulnerability data from the NVD andCISA KEV(US Government, public domain); Australian advisories fromASD’s ACSC (CC BY 4.0). Exploit-probability scores from FIRST EPSS.

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3 of these are being actively exploited right now.

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