CVE-2025-61908 - CVE House

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Status published High CVE-2025-61908

Icinga 2 Denial of Service (DoS) By Dereferencing Invalid Reference

7.1 CVSS

Vulnerability 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, when creating an invalid reference, such as a reference to null, dereferencing results in a segmentation fault. This can be used by any API user with access to an API endpoint that allows specifying a filter expression to crash the Icinga 2 daemon. A fix is included in the following Icinga 2 versions: 2.15.1, 2.14.7, and 2.13.13.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from Icinga

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

Icinga 2 API users could access restricted values in filter expressions

Icinga DB Web hidden/protected custom variables are prone to filter enumeration

Icinga DB Web Exposure of Sensitive Information to an Unauthorized Actor vulnerability

Icinga 2 certificate renewal might incorrectly renew an invalid certificate

Affected Vendor

Icinga

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Affected Software

icinga2

Vulnerable Versions:

>=2.10.0, < 2.13.13, >=2.14.0, < 2.14.7, >=2.15.0, < 2.15.1

Timeline

Official Publish: October 16th, 2025

Last Modified: October 16th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1499 Endpoint Denial of Service

T1499.004 Application or System Exploitation

T1489 Service Stop

T1203 Exploitation for Client Execution

T1190 Exploit Public-Facing Application