CVE-2016-20024

9.3 criticalEPSS 0.7%

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

CVSS 4.0

9.3 critical

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

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
CWE: CWE-538
Published: 2026-03-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

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

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