Vulnerability in Checkmk
CVE-2025-2596
Session logout could be overwritten in Checkmk GmbH's Checkmk versions <2.3.0p30, <2.2.0p41, and 2.1.0p49 (EOL)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (9.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 9.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Checkmk — versions 2.1.0, 2.2.0, 2.3.0
- Checkmk Gmbh — versions 2.4.0, 2.3.0, 2.2.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- checkmk.com/werk/17808 (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-2596?
- CVE-2025-2596 is a medium-severity vulnerability in Checkmk, classified under Insufficient Session Expiration. CVSS score: 5.3/10. Published 2025-03-26.
- How severe is CVE-2025-2596?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-2596 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.