CVE-2024-49369 CRITICAL

CVE-2024-49369: Icinga 2 has a TLS Certificate Validation Bypass for JSON-RPC and HTTP API Connections

Vendor Icinga
Product icinga2
Weakness CWE-295
Published November 12, 2024
Last update November 3, 2025
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. The TLS certificate validation in all Icinga 2 versions starting from 2.4.0 was flawed, allowing an attacker to impersonate both trusted cluster nodes as well as any API users that use TLS client certificates for authentication (ApiUser objects with the client_cn attribute set). This vulnerability has been fixed in v2.14.3, v2.13.10, v2.12.11, and v2.11.12.

Key dates

02Disclosure timeline

November 12, 2024 CVE published
November 3, 2025 Record updated