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Critical · 9.8 Known exploited Scanner template Public exploit CVE-2023-1671 EUVD-2023-23899GHSA-5f37-m2hf-qphr

A pre-auth command injection vulnerability in the warn-proceed handler of Sophos Web Appliance older than version 4.3.10.4 allows execution…

Published Apr 4, 2023 · Updated Oct 21, 2025 · Assigned by Sophos

Vendor: Sophos Product: Sophos Web Appliance Category: Network devices

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.

Affected products

VendorProductAffectedFixed
Sophos Sophos Web Appliance unspecified – < 4.3.10.4 4.3.10.4

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

GitHub 3 repositories

  • W01fh4cker/CVE-2023-1671-POC ★ 15 · Apr 24, 2023

    CVE-2023-1671-POC, based on dnslog platform

  • ohnonoyesyes/CVE-2023-1671 ★ 3 · Apr 23, 2023

    Pre-Auth RCE in Sophos Web Appliance

  • csffs/cve-2023-1671 ★ 0 · May 17, 2023

    Exploit to cve-2023-1671. So there is a test and exploitation function. The test sends a ping request to the dnslog domain from the vulnerable site. If the ping passes, the vulnerability exists, if i…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

References