{"id":"CVE-2016-20024","aliases":["EUVD-2016-10803","GHSA-5w3w-4xg4-wwhf"],"status":"published","title":"ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation","description":"ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-07","score":0.00764,"percentile":0.55653,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-538"],"published":"2026-03-15T13:35:11Z","modified":"2026-07-28T01:46:26Z","products":[{"vendor":"zkteco inc.","product":"zkteco zktime.net"}],"references":[{"url":"https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php","tags":["third-party-advisory"]},{"url":"https://cxsecurity.com/issue/WLB-2016080264","tags":["third-party-advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/116487","tags":["vdb-entry"]},{"url":"https://packetstormsecurity.com/files/138565","tags":["exploit"]},{"url":"https://www.exploit-db.com/exploits/40322/","tags":["exploit"]},{"url":"https://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-20024"},{"url":"https://www.exploit-db.com/exploits/40322"},{"url":"https://github.com/advisories/GHSA-5w3w-4xg4-wwhf"}],"sources":{"cve":[{"id":"CVE-2016-20024","title":"ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation","description":"ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.","status":"published","published":"2026-03-15T13:35:11.36Z","modified":"2026-07-28T01:46:26.642Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-538"],"updated_at":"2026-11-02T14:33:30.359814Z"}],"euvd":[{"id":"EUVD-2016-10803","description":"ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.","status":"published","published":"2026-03-15T13:35:11Z","modified":"2026-07-28T01:46:26Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T18:02:33.420584Z"}],"ghsa":[{"id":"GHSA-5w3w-4xg4-wwhf","title":"ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows...","description":"ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.","status":"published","published":"2026-03-16T15:30:40Z","modified":"2026-03-16T15:30:41Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-538"],"updated_at":"2026-11-02T15:06:38.778049Z"}],"nvd":[{"id":"CVE-2016-20024","description":"ZKTeco ZKTime.Net 3.0.1.6 contains an insecure file permissions vulnerability that allows unprivileged users to escalate privileges by modifying executable files. Attackers can exploit world-writable permissions on the ZKTimeNet3.0 directory and its contents to replace executable files with malicious binaries for privilege escalation.","status":"published","published":"2026-03-16T14:17:48.35Z","modified":"2026-06-17T00:43:06.623Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-538"],"updated_at":"2026-11-02T14:03:40.811555Z"}]}}