{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-15561","assignerOrgId":"551230f0-3615-47bd-b7cc-93e92e730bbf","state":"PUBLISHED","assignerShortName":"SEC-VLab","dateReserved":"2026-02-04T07:44:34.747Z","datePublished":"2026-02-19T10:53:18.501Z","dateUpdated":"2026-02-23T18:26:47.903Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unknown","product":"WorkTime (on-prem/cloud)","vendor":"NesterSoft Inc.","versions":[{"status":"affected","version":"<= 11.8.8"}]}],"credits":[{"lang":"en","type":"finder","value":"Tobias Niemann, SEC Consult Vulnerability Lab"},{"lang":"en","type":"finder","value":"Daniel Hirschberger, SEC Consult Vulnerability Lab"},{"lang":"en","type":"finder","value":"Thorger Jansen, SEC Consult Vulnerability Lab"},{"lang":"en","type":"finder","value":"Marius Renner, SEC Consult Vulnerability Lab"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

An attacker can exploit the update behavior of the WorkTime monitoring daemon to elevate privileges on the local system to NT Authority\\SYSTEM. A malicious executable must be named  WTWatch.exe and dropped in the C:\\ProgramData\\wta\\ClientExe directory, which is writable by \"Everyone\". The executable will then be run by the WorkTime monitoring daemon.

"}],"value":"An attacker can exploit the update behavior of the WorkTime monitoring daemon to elevate privileges on the local system to NT Authority\\SYSTEM. A malicious executable must be named  WTWatch.exe and dropped in the C:\\ProgramData\\wta\\ClientExe directory, which is writable by \"Everyone\". The executable will then be run by the WorkTime monitoring daemon."}],"impacts":[{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","description":"CWE-269 Improper Privilege Management","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"551230f0-3615-47bd-b7cc-93e92e730bbf","shortName":"SEC-VLab","dateUpdated":"2026-02-19T10:53:18.501Z"},"references":[{"tags":["third-party-advisory"],"url":"https://r.sec-consult.com/worktime"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"The vendor did not respond to our communication attempts anymore. It is currently as of February 2026 unclear, whether a patch is available. Please contact the vendor to request a patch for the identified critical security issues.
"}],"value":"The vendor did not respond to our communication attempts anymore. It is currently as of February 2026 unclear, whether a patch is available. Please contact the vendor to request a patch for the identified critical security issues."}],"source":{"discovery":"EXTERNAL"},"title":"Local Privilege Escalation in NesterSoft WorkTime","x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-02-23T18:26:10.960311Z","id":"CVE-2025-15561","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-23T18:26:47.903Z"}}]}}