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CVE-2025-61909

Icinga 2 signals sent as root to processes based on PID file written by the Icinga 2 daemon user

Published: Oct 16, 2025Updated: Oct 29, 2025 Sources: CVE List NVDCWE-250
NVD MITRE
4.4CVSSMEDIUM
EPSS Score
0.2%
Top 90.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:HUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-250

Affected Products

icingaicinga
On-prem
Enterprise Software / itsm-monitoring
icinga2Icinga
On-prem
Enterprise Software / itsm-monitoring
icingaoss-projectUSEnterprise Softwareaka icinga web 2, icinga2, icinga

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Privilege Escalation
View detailed technique mapping

References

https://github.com/Icinga/icinga2/commit/51ec73cbd922a76fc0f60e1d8d33acd7caa5d587
github.com
https://github.com/Icinga/icinga2/issues/10527
github.com
https://github.com/Icinga/icinga2/security/advisories/GHSA-pg6g-g99v-mw46
github.com
and 1 more references View all →

Timeline

Published
Oct 16, 2025
Last Updated
Oct 29, 2025

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