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TI-2025-38259 Aliases CVE-2025-61909

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

Priority LOW 18CWE-250Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Privilege escalation
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-250.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00216 12th percentileScored 2026-11-07
Fix Fixed icinga2 (Icinga): 2.13.13, 2.14.7, 2.15.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Icingaicinga22.10.0 to before 2.13.13; 2.14.0 to before 2.14.7; 2.15.0 to before 2.15.12.13.13, 2.14.7, 2.15.1Patch availableCNA
  • icinga2 VendorIcinga Affected 2.10.0 to before 2.13.13; 2.14.0 to before 2.14.7; 2.15.0 to before 2.15.1 Fixed in 2.13.13, 2.14.7, 2.15.1 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:*2.10.0 to before 2.13.13; 2.14.0 to before 2.14.7VulnerableIcinga
cpe:2.3:a:icinga:icinga:2.15.0:*:*:*:*:*:*:*2.15.0VulnerableIcinga
  • cpe:2.3:a:icinga:icinga:*:*:*:*:*:*:*:* Versions 2.10.0 to before 2.13.13; 2.14.0 to before 2.14.7 Vulnerable ·Icinga
  • cpe:2.3:a:icinga:icinga:2.15.0:*:*:*:*:*:*:* Versions 2.15.0 Vulnerable ·Icinga

Remediation

  • Fix · CNA icinga2 (Icinga) Fixed in 2.13.13, 2.14.7, 2.15.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-61909

References

Patch 2

Other 2

  • TI-2024-16337 Icinga Director configuration is susceptible to Cross-Site Request Forgery CVSS 3.1HIGH 8.3
  • TI-2012-05060 Multiple stack-based buffer overflows in the get_history function in history.cgi in… CVSS 2.0HIGH 7.5
  • TI-2013-05840 Multiple off-by-one errors in Nagios Core 3.5.1, 4.0.2, and earlier, and Icinga before… CVSS 2.0MEDIUM 5.5
  • TI-2024-32957 Icinga 2 has a TLS Certificate Validation Bypass for JSON-RPC and HTTP API Connections CVSS 3.1CRITICAL 9.8
  • TI-2025-30428 Icinga 2 certificate renewal might incorrectly renew an invalid certificate CVSS 4.0CRITICAL 9.3
  • TI-2021-12411 Passwords used to access external services inadvertently exposed through API CVSS 3.1HIGH 8.8
See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences