01 Record
CVE-2016-20024
ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation
CriticalPUBLISHEDCNA: VulnCheck
CNA base score9.3 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
02 Description
ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalation
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 0.74% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 54.5% of scored records. A rank, not a probability.
- NVD base score
- 9.3 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS 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/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
- NVD analysis status
- Deferred. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-03-15 13:35Z7 MO AGO
- Last updated
- 2026-07-28 01:46Z3 MO AGO
- Reserved
- 2026-03-15
- Assigning CNA
- VulnCheck
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.3)
- CNA CVSS 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
- Weaknesses
- CWE-538Insertion of Sensitive Information into Externally-Accessible File or DirectoryBase
- Data version
- 5.2
- Document digest
- 183bddf198ac945c6ef09cf00c9b5e765a147514e5c61412b98b47c4e9042fe8
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.zeroscience.mkZero Science Lab Disclosurehttps://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php
- cxsecurity.comCXSecurityhttps://cxsecurity.com/issue/WLB-2016080264
- exchange.xforce.ibmcloud.comIBM X-Force Exchangehttps://exchange.xforce.ibmcloud.com/vulnerabilities/116487
- packetstormsecurity.comPacket Storm Securityhttps://packetstormsecurity.com/files/138565
- www.exploit-db.comReferencehttps://www.exploit-db.com/exploits/40322/
- www.vulncheck.comVulnCheck Advisory: ZKTeco ZKTime.Net 3.0.1.6 Insecure File Permissions Privilege Escalationhttps://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation
07 Remediation
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.