What is CVE-2024-49369?

CVE-2024-49369 is a critical-severity vulnerability in Icinga, classified under Improper Certificate Validation. CVSS score: 9.8/10. Published 2024-11-12.

How severe is CVE-2024-49369?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2024-49369 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Icinga

CVE-2024-49369

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.

Vulnerability class: Improper Certificate Validation

Published 2024-11-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.029 (86.8th percentile), scored 2026-10-21.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000

Affected products

Icinga
Icinga Icinga2 — versions >= 2.4.0, < 2.11.12, >= 2.12.0, < 2.12.11, >= 2.13.0, < 2.13.10
Debian Linux — versions 11.0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

Public proof-of-concept exploits

References

github.com/Icinga/icinga2/security/advisories/GHSA-j7wq-r9mg-9wpv (Patch, Vendor Advisory)
github.com/Icinga/icinga2/commit/0419a2c36de408e9a703aec0962061ec9a285d3c (Patch)
github.com/Icinga/icinga2/commit/2febc5e18ae0c93d989e64ebc2a9fd90e7205ad8 (Patch)
github.com/Icinga/icinga2/commit/3504fc7ed688c10d86988e2029a65efc311393fe (Patch)
github.com/Icinga/icinga2/commit/869a7d6f0fe38c748e67bacc1fbdd42c933030f6 (Patch)
github.com/Icinga/icinga2/commit/8fed6608912c752b337d977f730547875a820831 (Patch)
icinga.com/blog/2024/11/12/critical-icinga-2-security-releases-2-14-3 (Release Notes)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2024-49369?: CVE-2024-49369 is a critical-severity vulnerability in Icinga, classified under Improper Certificate Validation. CVSS score: 9.8/10. Published 2024-11-12.
How severe is CVE-2024-49369?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-49369 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.