p PatchFirst

CVE-2026-61550

CVE-2026-61550 · Icinga 2: Improper access control for JSON-RPC update certificate messages

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.8 · Critical · EPSS 0.7% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • icinga2

    Versions
    • >= 2.8, < 2.14.9: Affected
    • >= 2.15.0, < 2.15.4: Affected
    • >= 2.16.0, < 2.16.2: Affected

    No fix published

  • icinga2 Debian:12

    Versions
    • 2.13.6-2
    • 2.13.6-2+deb12u1
    • 2.13.6-2+deb12u2
    • 2.13.7-1
    • 2.13.7-1~exp1
    • 2.13.8-1
    • 2.14.0-1~exp1
    • 2.14.1-1
    • 2.14.2-1
    • 2.14.2-1+loong64
    • 2.14.3-1
    • 2.14.4-1
    • 2.14.5-1
    • 2.14.6-1
    • 2.15.0-1
    • 2.15.0-1~exp1
    • 2.15.1-1
    • 2.15.2-1
    • 2.15.2-2
    • 2.16.0-1
    • 2.16.0-2
    • 2.16.0-3~exp1
    • 2.16.0-3~exp2
    • 2.16.0-3~exp3
    • 2.16.0-3~exp4
    • 2.16.1-1
    • 2.16.1-1~exp1
    • 2.16.2-1
    • 2.16.2-2
    • 2.16.3-1
    • 2.16.4-1
    • 2.16.5-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Debian:13

    Versions
    • 2.14.6-1
    Affected ranges
    • ECOSYSTEM: < 2.14.6-1+deb13u1

    Update to 2.14.6-1+deb13u1

  • icinga2 Debian:14

    Versions
    • 2.14.6-1
    • 2.15.0-1
    • 2.15.0-1~exp1
    • 2.15.1-1
    • 2.15.2-1
    • 2.15.2-2
    • 2.16.0-1
    • 2.16.0-2
    • 2.16.0-3~exp1
    • 2.16.0-3~exp2
    • 2.16.0-3~exp3
    • 2.16.0-3~exp4
    • 2.16.1-1
    • 2.16.1-1~exp1
    Affected ranges
    • ECOSYSTEM: < 2.16.2-1

    Update to 2.16.2-1

  • icinga2 Ubuntu:16.04:LTS

    Versions
    • 2.3.8-1build1
    • 2.3.11-1
    • 2.4.0-1
    • 2.4.1-1
    • 2.4.1-2
    • 2.4.1-2ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Ubuntu:18.04:LTS

    Versions
    • 2.7.0-1
    • 2.8.1-0ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Ubuntu:20.04:LTS

    Versions
    • 2.10.5-1build1
    • 2.11.2-1
    • 2.11.2-1ubuntu1
    • 2.11.2-1ubuntu2
    • 2.11.2-1ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Ubuntu:22.04:LTS

    Versions
    • 2.12.3-1
    • 2.13.1-1
    • 2.13.2-1
    • 2.13.2-1build1
    • 2.13.2-1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Ubuntu:24.04:LTS

    Versions
    • 2.13.8-1
    • 2.14.1-1
    • 2.14.2-1
    • 2.14.2-1build1
    • 2.14.2-1build2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • icinga2 Ubuntu:26.04:LTS

    Versions
    • 2.15.0-1
    • 2.15.1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

Check your server →