Vulnerability in Checkmk
CVE-2025-64996
In Checkmk versions prior to 2.4.0p16, 2.3.0p41, and all versions of 2.2.0 and older, the mk_inotify plugin creates world-readable and writable files, allowing any local user on the system to read the plugin's output and manipulate it, potentially leading to unauthorized access to or modification of monitoring data.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.001 (0.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 1st percentile — 0.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Checkmk — versions 2.3.0, 2.4.0
- Checkmk Gmbh — versions 2.4.0, 2.3.0, 2.2.0
Weakness classification (CWE)
References
- checkmk.com/werk/18570 (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-64996?
- CVE-2025-64996 is a medium-severity vulnerability in Checkmk, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 4.4/10. Published 2025-11-18.
- How severe is CVE-2025-64996?
- Medium severity. CVSS v3 base score is 4.4 out of 10.