CVE-2016-20024

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cxsecurity.com/issue/WLB-2016080264
https://exchange.xforce.ibmcloud.com/vulnerabilities/116487
https://packetstormsecurity.com/files/138565
https://www.exploit-db.com/exploits/40322/
https://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php

Configurations

No configuration.

History

No history.

Information

Published : 2026-03-16 14:17

Updated : 2026-03-16 14:53

NVD link : CVE-2016-20024

Mitre link : CVE-2016-20024

CVE.ORG link : CVE-2016-20024

JSON object : View

Products Affected

No product.

CWE

CWE-538

Insertion of Sensitive Information into Externally-Accessible File or Directory

{"id": "CVE-2016-20024", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-03-16T14:17:48.350", "references": [{"url": "https://cxsecurity.com/issue/WLB-2016080264", "source": "disclosure@vulncheck.com"}, {"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/116487", "source": "disclosure@vulncheck.com"}, {"url": "https://packetstormsecurity.com/files/138565", "source": "disclosure@vulncheck.com"}, {"url": "https://www.exploit-db.com/exploits/40322/", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/zkteco-zktime-net-insecure-file-permissions-privilege-escalation", "source": "disclosure@vulncheck.com"}, {"url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5360.php", "source": "disclosure@vulncheck.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-538"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "ZKTeco ZKTime.Net 3.0.1.6 contiene una vulnerabilidad de permisos de archivo inseguros que permite a usuarios sin privilegios realizar una escalada de privilegios mediante la modificaci\u00f3n de archivos ejecutables. Los atacantes pueden explotar los permisos de escritura global (world-writable) en el directorio ZKTimeNet3.0 y su contenido para reemplazar archivos ejecutables con binarios maliciosos para la escalada de privilegios."}], "lastModified": "2026-03-16T14:53:46.157", "sourceIdentifier": "disclosure@vulncheck.com"}