CVE-2022-1040
Sophos Firewall Authentication Bypass Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 21 April 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.80% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 2 September 2022
- CISA KEV
- Listed 31 March 2022 · due 21 April 2022
- Affected
- sophos/sfos
- Source
- security-alert@sophos.com
EPSS 99.8% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2022-1040
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/51006Exploit, Third Party Advisory, VDB Entry
- https://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rceMitigation, Vendor Advisory
- http://packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
- https://www.exploit-db.com/exploits/51006Exploit, Third Party Advisory, VDB Entry
- https://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rceMitigation, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-1040US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.