Vulnerability in Civetweb
CVE-2026-5789
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.001 (3.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.001 · change: -0.001
Affected products
- Civetweb — versions 1.16
- Civetweb Project — versions 1.16
Weakness classification (CWE)
References
- www.incibe.es/en/incibe-cert/notices/aviso/search-path-without-quotes-civetweb (Third Party Advisory, patch)
Frequently asked questions
- What is CVE-2026-5789?
- CVE-2026-5789 is a high-severity vulnerability in Civetweb, classified under Unquoted Search Path or Element. CVSS score: 7.8/10. Published 2026-04-21.
- How severe is CVE-2026-5789?
- High severity. CVSS v3 base score is 7.8 out of 10.