Skip to content
CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-61550

Icinga 2: Improper access control for JSON-RPC update certificate messages

Description

Icinga 2 is an open source monitoring system. From 2.8 until 2.14.9, 2.15.4, and 2.16.2, certificate update JSON-RPC message handling does not validate that the sender is a trusted endpoint. An unauthenticated network attacker able to connect to TCP port 5665 can replace the node certificate and trusted CA certificate, impersonate a trusted node, and take control of the node. This issue is fixed in versions 2.14.9, 2.15.4, and 2.16.2.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Icinga icinga2

  • >= 2.8, < 2.14.9affected
  • >= 2.15.0, < 2.15.4affected
  • >= 2.16.0, < 2.16.2affected

References