Is Checkmk 2.3 patched?
Checkmk · cycle 2.3 · Official site ↗
2.380/100Good
Current stable (2.5): 74/100
Health score80/100
Open issues5
Exploited now0
Cycle 2.3 EOL2026-10-29
Latest release2.5
Summary iPlain-English security status for Checkmk 2.3, built from its CVEs, active-exploitation data, end-of-life date and latest release.
Checkmk 2.3 is part of the 2.3 release line. 5 known vulnerabilities affect it. The 2.3 line is supported until 2026-10-29. The latest supported Checkmk release is 2.5.
Known issues affecting 2.3
Exploited first, then by exploitation probability.
CVE-2026-8078 MEDIUM EPSS 0% → see advisory CVE-2026-9549 MEDIUM EPSS 0% → see advisory CVE-2026-8833 MEDIUM EPSS 0% → see advisory CVE-2026-7186 MEDIUM EPSS 0% → see advisory CVE-2025-39666 HIGH EPSS 0% → see advisoryOther Checkmk versions
Check another release line of Checkmk.
Frequently asked
Is Checkmk 2.3 patched?
5 known issues affect Checkmk 2.3.
When does Checkmk 2.3 reach end-of-life?
Checkmk 2.3 is supported until 2026-10-29.
What is the latest version of Checkmk?
The latest supported Checkmk release is 2.5.
Is Checkmk 2.3 still receiving security updates?
Yes — the 2.3 line is still supported until 2026-10-29 and receiving security updates. The latest release is 2.5.
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Checkmk's official advisory before you patch or upgrade — Checkmk official site ↗