CVE-2026-111573
Published:November 06, 2026
Updated:November 12, 2026
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.
Affected Packages
https://github.com/Checkmk/checkmk.git (GITHUB):
Affected version(s) >=v1.6.0p23 <v2.3.0p52 || >=v2.0.0 <v2.3.0p52 || >=v2.1.0b1 <v2.3.0p52 || >=v2.2.0b1-rc1 <v2.3.0p52 || >=v2.3.0b1-rc1 <v2.3.0p52Fix Suggestion:
Update to version v2.3.0p52https://github.com/Checkmk/checkmk.git (GITHUB):
Affected version(s) >=v2.4.0b1-rc1 <v2.4.0p39Fix Suggestion:
Update to version v2.4.0p39https://github.com/Checkmk/checkmk.git (GITHUB):
Affected version(s) >=v2.5.0b1-rc1 <v2.5.0p18Fix Suggestion:
Update to version v2.5.0p18Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.3
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
6.3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Insecure Inherited Permissions
EPSS
Base Score:
0.13