Unrated severityNVD Advisory· Published Oct 16, 2025· Updated Oct 16, 2025
Icinga 2 signals sent as root to processes based on PID file written by the Icinga 2 daemon user
CVE-2025-61909
Description
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.
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Affected products
3Patches
Vulnerability mechanics
References
4- github.com/Icinga/icinga2/commit/51ec73cbd922a76fc0f60e1d8d33acd7caa5d587mitrex_refsource_MISC
- github.com/Icinga/icinga2/issues/10527mitrex_refsource_MISC
- github.com/Icinga/icinga2/security/advisories/GHSA-pg6g-g99v-mw46mitrex_refsource_CONFIRM
- icinga.com/blog/releasing-icinga-2-v2-15-1-2-14-7-and-2-13-13-and-icinga-db-web-v1-2-3-and-1-1-4mitrex_refsource_MISC
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