What’s Vulnerable › Vulnerabilities
CVE-2016-20024: ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-03-16 · updated 2026-06-17
- Weakness: CWE-538
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.
Affected products
- ZKTeco Inc. ZKTeco ZKTime.Net: 3.0.1.6, 3.0.1.5 (160622), 3.0.1.1 (160216)
References
- https://cxsecurity.com/issue/WLB-2016080264
- https://exchange.xforce.ibmcloud.com/vulnerabilities/116487
- https://packetstormsecurity.com/files/138565
- https://www.exploit-db.com/exploits/40322/
- https://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php
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