What is CVE-2026-24413?

CVE-2026-24413 is a medium-severity vulnerability in Icinga, classified under Incorrect Default Permissions. CVSS score: 5.5/10. Published 2026-01-29.

How severe is CVE-2026-24413?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Icinga

CVE-2026-24413

Icinga 2 is an open source monitoring system. Starting in version 2.3.0 and prior to versions 2.13.14, 2.14.8, and 2.15.2, the Icinga 2 MSI did not set appropriate permissions for the `%ProgramData%\icinga2\var` folder on Windows. This resulted in the its contents - including the private key of the user and synced configuration - being readable by all local users. All installations on Windows are affected. Versions 2.13.14, 2.14.8, and 2.15.2 contains a fix. There are two possibilities to work around the issue without upgrading Icinga 2. Upgrade Icinga for Windows to at least version v1.13.4, v1.12.4, or v1.11.2. These version will automatically fix the ACLs for the Icinga 2 agent as well. Alternatively, manually update the ACL for the given folder `C:\ProgramData\icinga2\var` (and `C:\Program Files\WindowsPowerShell\modules\icinga-powershell-framework\certificate` to fix the issue for the Icinga for Windows as well) including every sub-folder and item to restrict access for general users, only allowing the Icinga service user and administrators access.

Published 2026-01-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (0.1th percentile), scored 2026-10-15.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 0th percentile — 0.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Icinga
Icinga Icinga2 — versions >= 2.3.0, < 2.13.14, >= 2.14.0, < 2.14.8, >= 2.15.0, < 2.15.2
Microsoft Windows

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

github.com/Icinga/icinga2/security/advisories/GHSA-vfjg-6fpv-4mmr (Vendor Advisory)
github.com/Icinga/icinga-powershell-framework/security/advisories/GHSA-88h5-rrm… (Not Applicable)
icinga.com/blog/releasing-icinga-2-v2-15-2-v2-14-8-v2-13-14-and-icinga-for-wind… (Patch, Press/Media Coverage)

Frequently asked questions

What is CVE-2026-24413?: CVE-2026-24413 is a medium-severity vulnerability in Icinga, classified under Incorrect Default Permissions. CVSS score: 5.5/10. Published 2026-01-29.
How severe is CVE-2026-24413?: Medium severity. CVSS v3 base score is 5.5 out of 10.