Vulnerability · Published Oct 16, 2025 · Assigned by GitHub_M
CVE-2025-61908Icinga 2 Denial of Service (DoS) By Dereferencing Invalid Reference
High 7.1
In plain English
A high-severity null pointer dereference in icinga2 from Icinga. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | icinga2 | no fix listed | DEBIAN-CVE-2025-61908 |
| Debian:13 | icinga2 | 2.14.6-1+deb13u1 | DEBIAN-CVE-2025-61908 |
| Debian:14 | icinga2 | 2.15.1-1 | DEBIAN-CVE-2025-61908 |
| Ubuntu:22.04:LTS | icinga2 | no fix listed | UBUNTU-CVE-2025-61908 |
| Ubuntu:24.04:LTS | icinga2 | no fix listed | UBUNTU-CVE-2025-61908 |
| Ubuntu:25.10 | icinga2 | no fix listed | UBUNTU-CVE-2025-61908 |
| Ubuntu:26.04:LTS | icinga2 | no fix listed | UBUNTU-CVE-2025-61908 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N