Vulnerability in Icinga
CVE-2025-61909
Icinga 2 is an open source monitoring system. From 2.10.0 to before 2.15.1, 2.14.7, and 2.13.13, the safe-reload script (also used during systemctl reload icinga2) and logrotate configuration shipped with Icinga 2 read the PID of the main Icinga 2 process from a PID file writable by the daemon user, but send the signal as the root user. This can allow the Icinga user to send signals to processes it would otherwise not permitted to. A fix is included in the following Icinga 2 versions: 2.15.1, 2.14.7, and 2.13.13.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (11.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.4% 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
- Icinga — versions 2.15.0
- Icinga Icinga2 — versions >=2.10.0, < 2.13.13, >=2.14.0, < 2.14.7, >=2.15.0, < 2.15.1
Weakness classification (CWE)
References
- github.com/Icinga/icinga2/security/advisories/GHSA-pg6g-g99v-mw46 (Patch, Vendor Advisory)
- github.com/Icinga/icinga2/issues/10527 (Issue Tracking)
- github.com/Icinga/icinga2/commit/51ec73cbd922a76fc0f60e1d8d33acd7caa5d587 (Patch)
- icinga.com/blog/releasing-icinga-2-v2-15-1-2-14-7-and-2-13-13-and-icinga-db-web… (Release Notes)
Frequently asked questions
- What is CVE-2025-61909?
- CVE-2025-61909 is a medium-severity vulnerability in Icinga, classified under CWE-250. CVSS score: 4.4/10. Published 2025-10-16.
- How severe is CVE-2025-61909?
- Medium severity. CVSS v3 base score is 4.4 out of 10.