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CVE-2025-61908

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

Published: Oct 16, 2025Updated: Nov 26, 2025 Sources: CVE List NVDCWE-476
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.5%
Top 62.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-476

Affected Products

icingaicinga
On-prem
Enterprise Software / itsm-monitoring
icinga2Icinga
On-prem
Enterprise Software / itsm-monitoring
icingaoss-projectUSEnterprise Softwareaka icinga web 2, icinga2, icinga

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

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

Timeline

Published
Oct 16, 2025
Last Updated
Nov 26, 2025

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