CVE-2025-61908: icinga Null Dereference — Fix

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.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
icinga	icinga	2.10.0 — 2.13.13
icinga	icinga	2.14.0 — 2.14.7
icinga	icinga	2.15.0 — 2.15.1

References

Advisories & Patches

https://github.com/Icinga/icinga2/pull/6521 https://github.com/Icinga/icinga2/security/advisories/GHSA-v9jg-xqhj-f43g

Other References

https://icinga.com/blog/releasing-icinga-2-v2-15-1-2-14-7-and-2-13-13-and-icinga-db-web-v1-2-3-and-1-1-4

Frequently Asked Questions

What is CVE-2025-61908? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-61908? +

CVE-2025-61908 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-61908? +

CVE-2025-61908 affects products from icinga, specifically: icinga. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-61908? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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