CVE-2026-24414

Icinga for Windows certificate can have too-open permissions

Published Jan 29, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed

Description

The Icinga PowerShell Framework provides configuration and check possibilities to ensure integration and monitoring of Windows environments. In versions prior to 1.13.4, 1.12.4, and 1.11.2, permissions of the Icinga for Windows `certificate` directory grant every user read access, which results in the exposure of private key of the Icinga certificate for the given host. All installations are affected. Versions 1.13.4, 1.12.4, and 1.11.2 contains a patch. Please note that upgrading to a fixed version of Icinga for Windows will also automatically fix a similar issue present in Icinga 2, CVE-2026-24413. As a workaround, the permissions can be restricted manually by updating the ACL for the given folder `C:\Program Files\WindowsPowerShell\modules\icinga-powershell-framework\certificate` (and `C:\ProgramData\icinga2\var` to fix the issue for the Icinga 2 agent as well) including every sub-folder and item to restrict access for general users, only allowing the Icinga service user and administrators access.

Analysis

Technical impact

The vulnerability allows any user on the Windows system to read the Icinga for Windows certificate directory, exposing the private key used by the service. This can lead to a confidentiality compromise, as the key may be accessed by unauthorized users.

Affected Systems

All installations of the Icinga PowerShell Framework built before version 1.13.4, 1.12.4, or 1.11.2 are vulnerable. The issue affects the certificate directory within C:\Program Files\WindowsPowerShell\modules\icinga-powershell-framework and also applies to the Icinga 2 agent directory C:\ProgramData\icinga2\var in affected releases.

Risk and Exploitability

The medium CVSS score of 6.8 reflects a moderate severity. The EPSS score of less than 1% indicates a very low likelihood of immediate exploitation, and the vulnerability is not listed in CISA’s KEV catalog. Attackers would need local user access to read the directory, making the problem primarily a privilege‑management issue (CWE‑276).

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Icinga

icinga-powershell-framework

affected

Version	Status	Constraints
`< 1.11.2`	affected	—
`>= 1.12.0, < 1.12.4`	affected	—
`>= 1.13.0, < 1.13.4`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:icinga:icinga_powershell_framework::::::::
	cpe:2.3:a:icinga:icinga_powershell_framework::::::::
	cpe:2.3:a:icinga:icinga_powershell_framework::::::::

No data.

Vendor	Product	Versions
Icinga	Powershell-framework	—

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade Icinga for Windows to version 1.13.4, 1.12.4, or 1.11.2, a patch that corrects the ACL issue.
If an upgrade is not immediately feasible, manually adjust the ACL on the certificate directory C:\Program Files\WindowsPowerShell\modules\icinga-powershell-framework\certificate, adding all sub‑folders and items so that only the Icinga service user and administrators can read and write, and removing read access for all other users.
Apply the same ACL restrictions to the Icinga 2 agent directory C:\ProgramData\icinga2\var to prevent read access by non‑privileged users.

Generated by OpenCVE AI on April 18, 2026 at 18:40 UTC.

Tracking

Advisories

No advisories available

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.101% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/Icinga/icinga-powershell-framework/security/advisories/GHSA-88h5-rrm6-5973
https://github.com/Icinga/icinga2/security/advisories/GHSA-vfjg-6fpv-4mmr
https://icinga.com/blog/releasing-icinga-2-v2-15-2-v2-14-8-v2-13-14-and-icinga-for-windows-v1-13-4-v1-12-4-v1-11-2

History

Mar 10, 2026 6:15 PM First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Scoring metrics updated View changes

Type	Values Removed	Values Added
First Time appeared		Icinga icinga Powershell Framework
Weaknesses		NVD-CWE-noinfo
CPEs		cpe:2.3:a:icinga:icinga_powershell_framework::::::::
Vendors & Products		Icinga icinga Powershell Framework
Metrics		cvssV3_1 `{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}`

Jan 30, 2026 9:00 AM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Icinga Icinga powershell-framework
Vendors & Products		Icinga Icinga powershell-framework

Jan 29, 2026 10:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jan 29, 2026 6:00 PM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		The Icinga PowerShell Framework provides configuration and check possibilities to ensure integration and monitoring of Windows environments. In versions prior to 1.13.4, 1.12.4, and 1.11.2, permissions of the Icinga for Windows `certificate` directory grant every user read access, which results in the exposure of private key of the Icinga certificate for the given host. All installations are affected. Versions 1.13.4, 1.12.4, and 1.11.2 contains a patch. Please note that upgrading to a fixed version of Icinga for Windows will also automatically fix a similar issue present in Icinga 2, CVE-2026-24413. As a workaround, the permissions can be restricted manually by updating the ACL for the given folder `C:\Program Files\WindowsPowerShell\modules\icinga-powershell-framework\certificate` (and `C:\ProgramData\icinga2\var` to fix the issue for the Icinga 2 agent as well) including every sub-folder and item to restrict access for general users, only allowing the Icinga service user and administrators access.
Title		Icinga for Windows certificate can have too-open permissions
Weaknesses		CWE-276
References		https://github.com/Icinga/icinga-powershell-framework/security/advisories/GHSA-88h5-rrm6-5973 https://github.com/Icinga/icinga2/security/advisories/GHSA-vfjg-6fpv-4mmr https://icinga.com/blog/releasing-icinga-2-v2-15-2-v2-14-8-v2-13-14-and-icinga-for-windows-v1-13-4-v1-12-4-v1-11-2
Metrics		cvssV4_0 `{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}`