Nagios vulnerabilities: known CVEs & security history
Nagios · Monitoring · 37 tracked CVEs · 0 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Nagios release lines — 37 in total. A CVE here doesn't mean your version is affected — check Nagios's current status and the safe version to run.
Known Nagios CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2016-0726 | critical | 9.8 | 2% | 2017 |
| CVE-2014-5009 | critical | 9.8 | 5% | 2017 |
| CVE-2008-7313 | critical | 9.8 | 5% | 2017 |
| CVE-2016-9565 | critical | 9.8 | 23% | 2016 |
| CVE-2008-4796 | high | 10 | 9% | 2008 |
| CVE-2002-1959 | high | 10 | 4% | 2002 |
| CVE-2020-6585 | high | 8.8 | 1% | 2020 |
| CVE-2016-10089 | high | 7.8 | 1% | 2017 |
| CVE-2016-9566 | high | 7.8 | 5% | 2016 |
| CVE-2012-6096 | high | 7.5 | 66% | 2013 |
| CVE-2009-2288 | high | 7.5 | 83% | 2009 |
| CVE-2006-2489 | high | 7.5 | 5% | 2006 |
| CVE-2008-5028 | medium | 6.8 | 2% | 2008 |
| CVE-2016-8641 | medium | 6.7 | 1% | 2018 |
| CVE-2020-6584 | medium | 6.5 | 4% | 2020 |
| CVE-2008-5027 | medium | 6.5 | 7% | 2008 |
| CVE-2013-7205 | medium | 6.4 | 4% | 2014 |
| CVE-2017-12847 | medium | 6.3 | 1% | 2017 |
| CVE-2013-4214 | medium | 6.3 | 0% | 2013 |
| CVE-2016-6209 | medium | 6.1 | 2% | 2017 |
| CVE-2019-3698 | medium | 5.7 | 1% | 2020 |
| CVE-2018-13441 | medium | 5.5 | 1% | 2018 |
| CVE-2013-7108 | medium | 5.5 | 60% | 2014 |
| CVE-2020-6586 | medium | 5.4 | 27% | 2020 |
| CVE-2014-1878 | medium | 5 | 3% | 2014 |
| CVE-2008-6373 | medium | 5 | 5% | 2009 |
| CVE-2006-2162 | medium | 5 | 5% | 2006 |
| CVE-2020-13977 | medium | 4.9 | 3% | 2020 |
| CVE-2011-2179 | medium | 4.3 | 26% | 2011 |
| CVE-2011-1523 | medium | 4.3 | 3% | 2011 |
| CVE-2007-5803 | medium | 4.3 | 2% | 2008 |
| CVE-2008-1360 | medium | 4.3 | 2% | 2008 |
| CVE-2007-5624 | medium | 4.3 | 2% | 2007 |
| CVE-2013-2214 | medium | 4 | 4% | 2014 |
| CVE-2014-4703 | low | 2.1 | 1% | 2014 |
| CVE-2014-4702 | low | 2.1 | 0% | 2014 |
| CVE-2014-4701 | low | 2.1 | 1% | 2014 |
Is my Nagios version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your Nagios version → · Monitor Nagios for new CVEs →
Nagios vulnerabilities — frequently asked
How many known vulnerabilities does Nagios have?
IsItPatched tracks 37 CVEs for Nagios. 4 are critical-severity and 8 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Nagios have any actively-exploited vulnerabilities?
None of Nagios's tracked CVEs are currently in CISA's KEV catalog — but new ones can be added at any time, so keep your version current.
What is the most severe Nagios vulnerability?
Among tracked issues, CVE-2016-0726 (CRITICAL, CVSS 9.8) ranks highest — a Hard-coded credentials weakness.
Is Nagios safe to use?
It depends on the version. The latest supported Nagios release clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: Nagios security status · Nagios end-of-life · actively-exploited CVEs. Always verify against Nagios's advisories — see our disclaimer.