CVE-2026-61550 (GCVE-0-2026-61550)

Vulnerability from cvelistv5 – Published: 2026-09-18 17:21 – Updated: 2026-09-21 20:49
VLAI
Title
Icinga 2: Improper access control for JSON-RPC update certificate messages
Summary
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-21 15:29 UTC
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7634 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Icinga icinga2 Affected: >= 2.8, < 2.14.9
Affected: >= 2.15.0, < 2.15.4
Affected: >= 2.16.0, < 2.16.2
guessed Create a notification for this product.
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}



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