CVE-2016-20025

ZKTeco ZKAccess Professional 3.5.3 contains an insecure file permissions vulnerability that allows authenticated users to escalate privileges by modifying executable files. Attackers can leverage the Modify permission granted to the Authenticated Users group to replace executable binaries with malicious code for privilege escalation.

CVSS v4.0

8.7 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/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

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

EPSS

0.44% chance of exploitation in the next 30 days, 37th percentile

Published

2026-03-15

Updated

2026-06-08

Proof-of-concept exploits (2)

• https://packetstormsecurity.com/files/138566
• https://www.exploit-db.com/exploits/40323/

References

• CVE Record
• NVD entry

Related

• CVE-2016-20024
• CVE-2016-20026
• CVE-2016-20018
• CVE-2016-20027
• CVE-2016-20017
• CVE-2016-20028