Read the docs
TI-2016-09200 Aliases CVE-2016-20024GHSA-5w3w-4xg4-wwhf

ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation

Priority HIGH 81CWE-538Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00764 55th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ZKTecoZKTeco ZKTime.Net3.0.1.6; 3.0.1.5 (160622); 3.0.1.1 (160216)—No fix listedCNA
  • ZKTeco ZKTime.Net VendorZKTeco Affected 3.0.1.6; 3.0.1.5 (160622); 3.0.1.1 (160216) Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-20024
  2. 2026-10-03 Alias added: GHSA-5w3w-4xg4-wwhf

References

Exploit 2

Advisory 1

  • TI-2023-20210 A path traversal vulnerability in the iclock API of ZKTeco BioTime v8.5.5 allows… KEVCVSS 3.1HIGH 7.5
  • TI-2025-28829 Hard-coded credentials in ZKTeco ZKBio CVSecurity CVSS 3.1CRITICAL 9.8
  • TI-2024-24297 ZKTeco ZKBio CVSecurity v6.1.1 was discovered to contain a hardcoded cryptographic key. CVSS 3.1CRITICAL 9.8
  • TI-2023-20211 ZKTeco BioTime 8.5.5 through 9.x before 9.0.1 (20240617.19506) allows authenticated… CVSS 3.1CRITICAL 9.8
  • TI-2016-09202 ZKTeco ZKBioSecurity 3.0 Hardcoded Credentials Remote Code Execution CVSS 4.0CRITICAL 9.3
  • TI-2016-09206 ZKTeco ZKBioSecurity 3.0 User Enumeration via authLoginAction CVSS 4.0CRITICAL 9.3
See all 70 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences