---
id: CVE-2026-67599
title: >-
  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 …
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 …
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
published: '2026-08-03'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:44:42.207'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67599'
references:
  - url: 'https://clearos.com/'
    label: disclosure@vulncheck.com
  - url: 'https://lazytitan.ro/clearos'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/clearos-os-command-injection-via-log-viewer-filter-parameter
    label: disclosure@vulncheck.com
tags:
  - nvd
  - exploit-available
epss: 0.02428
epssPercentile: 0.83529
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/LazyTitan33/CVE-2026-67599_ClearOS_RCE'
  checkedAt: '2026-09-24T20:52:15.404Z'
exploitAvailable: true
ingestedAt: '2026-09-24T20:51:40.177Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.