What is CVE-2023-6156?

CVE-2023-6156 is a high-severity vulnerability in Checkmk, classified under CWE-140. CVSS score: 7.6/10. Published 2023-11-22.

How severe is CVE-2023-6156?

High severity. CVSS v3 base score is 7.6 out of 10.

Vulnerability in Checkmk

CVE-2023-6156

Improper neutralization of livestatus command delimiters in the availability timeline in Checkmk <= 2.0.0p39, < 2.1.0p37, and < 2.2.0p15 allows arbitrary livestatus command execution for authorized users.

Published 2023-11-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.7th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Checkmk — versions 2.0.0, 2.1.0, 2.2.0
Checkmk Gmbh — versions 2.2.0, 2.1.0, 2.0.0

Weakness classification (CWE)

CWE-140

References

checkmk.com/werk/16221 (Vendor Advisory)

Frequently asked questions

What is CVE-2023-6156?: CVE-2023-6156 is a high-severity vulnerability in Checkmk, classified under CWE-140. CVSS score: 7.6/10. Published 2023-11-22.
How severe is CVE-2023-6156?: High severity. CVSS v3 base score is 7.6 out of 10.