{"id":"CVE-2026-111573","aliases":["EUVD-2026-118329","GHSA-gx39-fx9h-w86g"],"status":"published","title":"Privilege escalation via unprotected Windows agent data folder","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 \u003c2.5.0p18, \u003c2.4.0p39, \u003c2.3.0p52 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.","severity":{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00131,"percentile":0.0273,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-277"],"published":"2026-11-06T15:59:40Z","modified":"2026-11-06T18:35:11Z","products":[{"vendor":"checkmk gmbh","product":"checkmk"}],"references":[{"url":"https://checkmk.com/werk/19231","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111573"},{"url":"https://github.com/advisories/GHSA-gx39-fx9h-w86g"}],"sources":{"cve":[{"id":"CVE-2026-111573","title":"Privilege escalation via unprotected Windows agent data folder","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 \u003c2.5.0p18, \u003c2.4.0p39, \u003c2.3.0p52 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.","status":"published","published":"2026-11-06T15:59:40.56Z","modified":"2026-11-10T14:21:06.299Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H","level":"medium","assessor":"cna"}],"cwes":["CWE-277"],"updated_at":"2026-11-10T15:39:10.800702Z"}],"euvd":[{"id":"EUVD-2026-118329","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 \u003c2.5.0p18, \u003c2.4.0p39, \u003c2.3.0p52 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.","status":"published","published":"2026-11-06T15:59:40Z","modified":"2026-11-10T14:21:06Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H","level":"medium"}],"updated_at":"2026-11-06T21:07:05.573346Z"}],"ghsa":[{"id":"GHSA-gx39-fx9h-w86g","title":"Incorrect permissions on the Checkmk Windows agent's data directory, caused by a race condition...","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 \u003c2.5.0p18, \u003c2.4.0p39, \u003c2.3.0p52 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.","status":"published","published":"2026-11-06T18:35:10Z","modified":"2026-11-06T18:35:11Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-277"],"updated_at":"2026-11-06T19:01:26.771329Z"}],"nvd":[{"id":"CVE-2026-111573","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 \u003c2.5.0p18, \u003c2.4.0p39, \u003c2.3.0p52 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.","status":"published","published":"2026-11-06T16:17:37.723Z","modified":"2026-11-10T15:17:12.377Z","cvss":[{"version":"4.0","score":6.3,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-277"],"updated_at":"2026-11-10T18:20:09.868949Z"}]}}