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Vulnerability record · CVE-2024-49369 · published 12 November 2024

CVE-2024-49369: Icinga improper certificate validation vulnerability

Icinga · Icinga

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.

9.8 CVSS 3.1 Critical EPSS 2.9% · top 13.5% CWE-295 · Improper certificate validation
9.8CVSS 3.1 base score
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Icinga/icinga2/commit/0419a2c36de408e9a703aec0962061ec9a285d3c Patch
https://github.com/Icinga/icinga2/commit/2febc5e18ae0c93d989e64ebc2a9fd90e7205ad8 Patch
https://github.com/Icinga/icinga2/commit/3504fc7ed688c10d86988e2029a65efc311393fe Patch
https://github.com/Icinga/icinga2/commit/869a7d6f0fe38c748e67bacc1fbdd42c933030f6 Patch
https://github.com/Icinga/icinga2/commit/8fed6608912c752b337d977f730547875a820831 Patch
https://github.com/Icinga/icinga2/security/advisories/GHSA-j7wq-r9mg-9wpv PatchVendor Advisory
https://icinga.com/blog/2024/11/12/critical-icinga-2-security-releases-2-14-3 Release Notes
https://lists.debian.org/debian-lts-announce/2024/11/msg00010.html Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2024-49369), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.