Critical severity · published Mar 25, 2022
CVE-2022-1040
Sophos Firewall Authentication Bypass Vulnerability
In wildKEV
9.8
CVSS
99.8%
EPSS
Yes
On KEV
Description
An 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)99.8% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Mar 31, 2022
Federal remediation dueApr 21, 2022
Ransomware campaign useNot known
Affected products
Which versions
FI
Firewall · Sophos
through 18.5 MR3 · source: vendor, NVD, KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-1040
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-1040
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_CONFIRM
https://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rce
x_refsource_MISC
http://packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.html
x_refsource_MISC
https://www.exploit-db.com/exploits/51006
More from Firewall
9.8
CVE-2022-3236
Sophos Firewall Code Injection Vulnerability
9.8
CVE-2020-12271
Sophos SFOS SQL Injection Vulnerability
9.8
CVE-2025-7624
An SQL injection vulnerability in the legacy (transparent) SMTP proxy of Sophos Firewall versions older than 21.0 MR2 (21.0.2) can lead to remote code execution, if a quarantining…
9.8
CVE-2025-6704
An arbitrary file writing vulnerability in the Secure PDF eXchange (SPX) feature of Sophos Firewall versions older than 21.0 MR2 (21.0.2) can lead to pre-auth remote code…
9.8
CVE-2024-12728
A weak credentials vulnerability potentially allows privileged system access via SSH to Sophos Firewall older than version 20.0 MR3 (20.0.3)