CVE Catalog

CVE-2026-67599

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

High risk
1.91%

78th percentile - higher than 78% of all known CVEs

Summary

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.

Risk Assessment

An authenticated attacker can execute arbitrary commands as the webconfig user and then escalate to root, leading to full system compromise.

Recommendation

Immediately upgrade to a patched version or apply mitigations such as input sanitization and restricting sudo privileges.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS