What’s Vulnerable › Vulnerabilities
CVE-2026-67599: ClearOS 7.9 OS Command Injection via Log Viewer filter parameter
- Severity: high (CVSS 7.2 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-03 · updated 2026-10-23
- Weakness: CWE-78
Description
ClearOS 7.9 contains an OS command injection vulnerability in the Log Viewer component that allows authenticated attackers to execute arbitrary commands by submitting unsanitized input through the filter parameter, which is interpolated directly into a shell command in File.php. Attackers can inject command substitution payloads into the filter parameter to execute arbitrary commands as the webconfig user, and due to extensive NOPASSWD sudo privileges granted to that user by default, immediately escalate to root.
Affected products
References
- https://clearos.com/
- https://lazytitan.ro/clearos
- https://www.vulncheck.com/advisories/clearos-os-command-injection-via-log-viewer-filter-parameter
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