Summary iPlain-English security verdict for Checkmk, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Checkmk's security status could not be assessed at the last sync — vulnerability data was unavailable.
Disclosure trend iNew CVEs published for Checkmk each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
No urgent unpatched issues identified. ✓
Get alerted about Checkmk
Be emailed the moment Checkmk gets a newly exploited vulnerability (CISA KEV) or a release reaches end of life. Free · double opt-in · unsubscribe anytime.
We email only on real events for Checkmk — no marketing, no sharing, and we never know what you run. Track your whole stack →
Versions & lifecycle iWhen each release line stops receiving security patches (end-of-life). After EOL there are no more fixes — plan upgrades before these dates.
How long each Checkmk release line is supported — and when it sunsets. Select a line for its full report.
Full Checkmk end-of-life dates & support timeline →
2.5 latest 2.5 Supported until 2028-04-282.5 → 2.4 latest 2.4 Supported until 2027-11-062.4 → 2.3 latest 2.3 Supported until 2026-10-292.3 → 2.2 latest 2.2 End of life ended 2025-11-232.2 → See all upcoming end-of-life dates →Frequently asked
Is Checkmk safe and patched?
Checkmk's security status could not be assessed at the last sync — vulnerability data was unavailable.
What should I do about Checkmk now?
Upgrade Checkmk to the latest supported release (2.5) or later and apply available security updates, then confirm against Checkmk's official advisory.
When does Checkmk reach end-of-life?
The latest supported Checkmk release is 2.5. After end-of-life a release no longer receives security patches.
Which versions of Checkmk are still receiving security updates?
Supported Checkmk release lines (latest 2.5): 2.5, 2.4, 2.3. End-of-life releases no longer receive security patches.
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 ↗