{"id":"CVE-2025-39666","title":"Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in th…","summary":"Local privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in th…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-426","CWE-829"],"vendor":"checkmk","product":"checkmk","affected":["checkmk = 2.2.0","checkmk = 2.3.0","checkmk = 2.4.0","checkmk = 2.5.0"],"published":"2026-04-07","updated":"2026-10-05","sourceUpdated":"2026-10-05T17:10:00.237","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-39666","references":[{"url":"https://checkmk.com/werk/18891","label":"security@checkmk.com"}],"tags":["nvd"],"epss":0.00121,"epssPercentile":0.01694,"ingestedAt":"2026-10-05T17:27:45.027Z","slug":"CVE-2025-39666","body":"## Overview\n\nLocal privilege escalation in Checkmk 2.2.0 (EOL), Checkmk 2.3.0 before 2.3.0p46, Checkmk 2.4.0 before 2.4.0p25, and Checkmk 2.5.0 (beta) before 2.5.0b3 allows a site user to escalate their privileges to root, by manipulating files in the site context that are processed when the `omd` administrative command is run by root.\n\n## Affected\n\n- `checkmk = 2.2.0`\n- `checkmk = 2.3.0`\n- `checkmk = 2.4.0`\n- `checkmk = 2.5.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}