CVE-2016-20024

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.

CVSS v4.0

9.3 CRITICALCVSS: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

CVSS v3.1

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

EPSS

0.73% chance of exploitation in the next 30 days, 52th percentile

Published

2026-03-15

Updated

2026-07-28

Proof-of-concept exploits (2)

• https://packetstormsecurity.com/files/138565
• https://www.exploit-db.com/exploits/40322/

References

• CVE Record
• NVD entry

Related

• CVE-2016-20018
• CVE-2016-20025
• CVE-2016-20017
• CVE-2016-20026
• CVE-2016-20016
• CVE-2016-20027