{"id":"CVE-2025-66265","aliases":["EUVD-2025-199667","GHSA-9cqc-hhcp-cf94"],"status":"published","title":"Insecure permissions in configuration directory (C:\\\\usr)","description":"CMService.exe creates the C:\\\\usr directory and subdirectories with insecure permissions, granting write access to all authenticated users. This allows attackers to replace configuration files (such as snmp.conf) or hijack DLLs to escalate privileges.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00122,"percentile":0.0196,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2025-11-26T01:12:50Z","modified":"2026-10-18T20:10:00Z","products":[{"vendor":"megatec taiwan","product":"clientmate"}],"references":[{"url":"https://www.megatec.com.tw/software-download/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66265"},{"url":"https://www.megatec.com.tw/software-download"},{"url":"https://github.com/advisories/GHSA-9cqc-hhcp-cf94"}],"sources":{"cve":[{"id":"CVE-2025-66265","title":"Insecure permissions in configuration directory (C:\\\\usr)","description":"CMService.exe creates the C:\\\\usr directory and subdirectories with insecure permissions, granting write access to all authenticated users. This allows attackers to replace configuration files (such as snmp.conf) or hijack DLLs to escalate privileges.","status":"published","published":"2025-11-26T01:12:50.505Z","modified":"2025-11-26T15:31:02.065Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L","level":"medium","assessor":"cna"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:32:53.157279Z"}],"euvd":[{"id":"EUVD-2025-199667","description":"CMService.exe creates the C:\\\\usr directory and subdirectories with insecure permissions, granting write access to all authenticated users. This allows attackers to replace configuration files (such as snmp.conf) or hijack DLLs to escalate privileges.","status":"published","published":"2025-11-26T01:12:50Z","modified":"2025-11-26T15:31:02Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L","level":"medium"}],"updated_at":"2026-11-02T19:49:12.440244Z"}],"ghsa":[{"id":"GHSA-9cqc-hhcp-cf94","title":"CMService.exe creates the C:\\\\usr directory and subdirectories with insecure permissions,...","description":"CMService.exe creates the C:\\\\usr directory and subdirectories with insecure permissions, granting write access to all authenticated users. This allows attackers to replace configuration files (such as snmp.conf) or hijack DLLs to escalate privileges.","status":"published","published":"2025-11-26T03:30:22Z","modified":"2025-11-26T03:30:28Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L/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-269"],"updated_at":"2026-11-02T15:04:58.071945Z"}],"nvd":[{"id":"CVE-2025-66265","description":"CMService.exe creates the C:\\\\usr directory and subdirectories with insecure permissions, granting write access to all authenticated users. This allows attackers to replace configuration files (such as snmp.conf) or hijack DLLs to escalate privileges.","status":"published","published":"2025-11-26T01:16:10.173Z","modified":"2026-10-18T20:10:00.11Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L/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-269"],"updated_at":"2026-11-02T14:11:46.94029Z"}]}}