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CVE-2026-111573 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Incorrect permissions on the Checkmk Windows agent's data directory, caused by a race condition that discards the permission changes during service start, in Checkmk <2.5.0p18, <2.4.0p39, <2.3.0p52 and 2.2.0 (EOL) allow a local user to execute arbitrary code as SYSTEM by placing scripts in the agent's plugins or local folders, and to read the agent controller's private key.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:7 HIGHVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://checkmk.com/werk/19231	[email protected]	AdvisoryRemedyVendor

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-277	Insecure Inherited Permissions	[email protected]

Affected Products

Product	Versions
Checkmk	>= 2.5.0, < 2.5.0p18 >= 2.4.0, < 2.4.0p39 >= 2.3.0, < 2.3.0p52 2.2.0 (EOL)
CPE cpe:2.3:a:checkmk:checkmk:::::::: Remediation Upgrade: 3.0.0b1moderate effort Upgrade: 2.5.0p18moderate effort Upgrade: 2.4.0p39moderate effort Upgrade: 2.3.0p52moderate effort Workaround:low effort Manually apply permissions to `C:\ProgramData\checkmk`: 1. Disable inheritance on `C:\ProgramData\checkmk`. 2. Remove entries for the local `Users` group. 3. Verify that no entry grants write access to normal users by running `Get-Acl C:\ProgramData\checkmk\agent\local`.
Checkmk Windows agent	>= 2.5.0, < 2.5.0p18 >= 2.4.0, < 2.4.0p39 >= 2.3.0, < 2.3.0p52 2.2.0 (EOL)
CPE No CPEs found in CPE dictionary for this product. Remediation Upgrade: 3.0.0b1moderate effort Upgrade: 2.5.0p18moderate effort Upgrade: 2.4.0p39moderate effort Upgrade: 2.3.0p52moderate effort Workaround:low effort Manually apply permissions to `C:\ProgramData\checkmk`: 1. Disable inheritance on `C:\ProgramData\checkmk`. 2. Remove entries for the local `Users` group. 3. Verify that no entry grants write access to normal users by running `Get-Acl C:\ProgramData\checkmk\agent\local`.

Change History

1 change record found show changes