CVE•Published 2026-04-07•Modified 2026-04-14•0 articles on news•5 live references•NVD data
CVE-2025-39666Checkmk · Checkmk
Vulnerability data via NVD (ingested)
CVSS v3.1
7.3
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS percentile
—
Weaknesses (CWE)
Description
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 the site context that are processed when the `omd` administrative command is run by root.
Timeline
Published 2026-04-07
Modified 2026-04-14
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2025-39666Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Checkmk Checkmk" version:"2.2.0"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Checkmk"HTTP body or banner mentions "Checkmk" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2025-39666Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2025-39666Censys host search filtered to this CVE id.
grep.app
CVE-2025-39666Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2025-39666GitHub code search for direct mentions.
Google dork
"CVE-2025-39666" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2025-39666 on GitHub.
We haven't classified any articles referencing CVE-2025-39666 yet. The external references above still apply.