CVE-2023-1671
CRITICALCISA KEVEPSS 100th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
Sophos Web Appliance Command Injection Vulnerability
Sophos Web Appliance contains a command injection vulnerability in the warn-proceed handler that allows for remote code execution.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Remediation due: 2023-12-07
References
Related Vulnerabilities
Other CWE-77 (Command Injection) vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2024-3400 | Critical | 10.0 | 100% | KEV + Ransom | - |
| CVE-2024-21887 | Critical | 9.1 | 100% | KEV + Ransom | - |
| CVE-2023-1389 | High | 8.8 | 100% | KEV | Fix |
| CVE-2021-1498 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2012-1823 | Critical | 9.8 | 100% | KEV | Fix |
| CVE-2024-3273 | High | 7.3 | 100% | KEV | - |
Common questions
How do I fix CVE-2023-1671?
Upgrade web appliance to 4.3.10.4 or later.
Is CVE-2023-1671 being actively exploited?
Yes. CVE-2023-1671 is listed in the CISA Known Exploited Vulnerabilities catalog, which means exploitation has been observed in the wild. US federal agencies were required to remediate it by 2023-12-07. Treat it as a priority whatever its CVSS score says.
How severe is CVE-2023-1671?
CVE-2023-1671 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2023-1671 affect?
Published advisories record a fix for web appliance (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
Embed a live status badge for CVE-2023-1671
Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-27.