CVE-2023-1671
Sophos Web Appliance Command Injection Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 7 December 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A pre-auth command injection vulnerability in the warn-proceed handler of Sophos Web Appliance older than version 4.3.10.4 allows execution of arbitrary code.
- 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
- 100.00% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 25 April 2023
- CISA KEV
- Listed 16 November 2023 · due 7 December 2023
- Weakness
- CWE-77
- Affected
- sophos/web appliance
- Source
- security-alert@sophos.com
EPSS 100.0% 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 mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://www.sophos.com/en-us/security-advisories/sophos-sa-20230404-swa-rce; https://nvd.nist.gov/vuln/detail/CVE-2023-1671
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/172016/Sophos-Web-Appliance-4.3.10.4-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- https://www.sophos.com/en-us/security-advisories/sophos-sa-20230404-swa-rceVendor Advisory
- http://packetstormsecurity.com/files/172016/Sophos-Web-Appliance-4.3.10.4-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- https://www.sophos.com/en-us/security-advisories/sophos-sa-20230404-swa-rceVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-1671US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.