CVE-2016-20024

critical

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.

References

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php

https://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation

https://www.exploit-db.com/exploits/40322/

https://packetstormsecurity.com/files/138565

https://exchange.xforce.ibmcloud.com/vulnerabilities/116487

https://cxsecurity.com/issue/WLB-2016080264

Details

Source: Mitre, NVD

Published: 2026-03-16

Updated: 2026-04-15

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

CVSS v4

Base 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

Severity: Critical

EPSS

EPSS: 0.00056