CVE-2026-5789: Civetweb Project Civetweb

High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days.

Vulnerability related to an unquoted search path in CivetWeb v1.16. This vulnerability allows a local attacker to execute arbitrary code with elevated privileges by placing a malicious executable in a directory that is scanned before the intended application path (C:\Program Files\CivetWeb\CivetWeb.exe --), due to the absence of quotes in the service configuration.

Affected products

• Civetweb Project Civetweb: version 1.16 only

Published 2026-04-21. Last modified 2026-06-17.