CVE-2025-61908 Icinga 2 Denial of Service (DoS) By Dereferencing Invalid Reference
An authenticated API user can crash the Icinga 2 daemon by submitting a filter expression with an invalid reference, causing a segmentation fault.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-61908?
CVE-2025-61908 is a high-severity vulnerability in icinga2, published on 16 Oct 2025. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-476
Which versions are affected by CVE-2025-61908?
It affects 1 product.
Products include Icinga Icinga.
How do I fix CVE-2025-61908?
Upgrade to a fixed version.
Is CVE-2025-61908 being exploited?
There is no known exploitation of CVE-2025-61908 in the wild and no public exploit code.
Other vulnerabilities in icinga2
- CVE-2025-48057 Icinga 2 certificate renewal might incorrectly renew an invalid certificate
- CVE-2020-29663 Security feature bypass in n/a
- CVE-2024-24820 Icinga Director configuration is susceptible to Cross-Site Request Forgery
- CVE-2018-6535 Information disclosure in n/a
- CVE-2020-14004 Path traversal in n/a
Sources
Also known as DEBIAN-CVE-2025-61908, GHSA-v9jg-xqhj-f43g, UBUNTU-CVE-2025-61908.