CVE-2016-20024
ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation
- Published
- Updated
- Reserved
- Assigned by
- VulnCheck
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulnCheckCNA (assigner) | 4.0 | Critical9.3 | 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 |
| VulnCheckCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 4.0 | Critical9.3 | 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/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 |
- EPSS (exploitation in 30 days)
- 0.76% · top 45% of all CVEs (3 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.3.
Weakness
Affected products
ZKTeco Inc. · ZKTeco ZKTime.Net
- affected 3.0.1.6
- affected 3.0.1.5 (160622)
- affected 3.0.1.1 (160216)
What to do
Solution: The affected software ZKTime.Net has been officially discontinued. It is recommended that all users switch to using ZKBio Time.Net software. ZKBio Time.Net has fixed this vulnerability. It is recommended that users use the latest version of ZKBio Time.Net to eliminate the risk.
References (6)
- Zero Science Lab Disclosure (opens in a new tab)third-party-advisory
- CXSecurity (opens in a new tab)third-party-advisory
- IBM X-Force Exchange (opens in a new tab)vdb-entry
- Packet Storm Security (opens in a new tab)exploit
- Reference (opens in a new tab)exploit
- VulnCheck Advisory: ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation (opens in a new tab)third-party-advisory
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2016-20024)Record last updated .