{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2016-20026", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-03-15T12:36:32.692Z", "datePublished": "2026-03-15T13:35:16.754Z", "dateUpdated": "2026-03-16T14:20:20.775Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-03-15T13:35:16.754Z"}, "title": "ZKTeco ZKBioSecurity 3.0 Hardcoded Credentials Remote Code Execution", "descriptions": [{"lang": "en", "value": "ZKTeco ZKBioSecurity 3.0 contains hardcoded credentials in the bundled Apache Tomcat server that allow unauthenticated attackers to access the manager application. Attackers can authenticate with hardcoded credentials stored in tomcat-users.xml to upload malicious WAR archives containing JSP applications and execute arbitrary code with SYSTEM privileges."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Use of Hard-coded Credentials", "cweId": "CWE-798", "type": "CWE"}]}], "affected": [{"vendor": "ZKTeco Inc.", "product": "ZKTeco ZKBioSecurity", "versions": [{"version": "3.0.1.0_R_230", "status": "affected"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 9.3, "baseSeverity": "CRITICAL", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS"}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "references": [{"url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5362.php", "name": "Zero Science Lab Disclosure", "tags": ["third-party-advisory"]}, {"url": "https://cxsecurity.com/issue/WLB-2016080266", "name": "CXSecurity", "tags": ["third-party-advisory"]}, {"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/116484", "name": "IBM X-Force Exchange", "tags": ["vdb-entry"]}, {"url": "https://packetstormsecurity.com/files/138567", "name": "Packet Storm Security", "tags": ["exploit"]}, {"url": "https://www.exploit-db.com/exploits/40324/", "name": "Reference", "tags": ["exploit"]}, {"name": "VulnCheck Advisory: ZKTeco ZKBioSecurity 3.0 Hardcoded Credentials Remote Code Execution", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-hardcoded-credentials-remote-code-execution"}], "credits": [{"lang": "en", "value": "LiquidWorm as Gjoko Krstic of Zero Science Lab", "type": "finder"}], "x_generator": {"engine": "vulncheck"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2016-20026", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-16T14:15:30.366324Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-16T14:20:20.775Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "ZKTeco ZKBioSecurity 3.0 contains hardcoded credentials in the bundled Apache Tomcat server that allow unauthenticated attackers to access the manager application. Attackers can authenticate with hardcoded credentials stored in tomcat-users.xml to upload malicious WAR archives containing JSP applications and execute arbitrary code with SYSTEM privileges."}], "id": "CVE-2016-20026", "lastModified": "2026-03-16T14:17:48.777", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "disclosure@vulncheck.com", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}]}, "published": "2026-03-16T14:17:48.777", "references": [{"source": "disclosure@vulncheck.com", "url": "https://cxsecurity.com/issue/WLB-2016080266"}, {"source": "disclosure@vulncheck.com", "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/116484"}, {"source": "disclosure@vulncheck.com", "url": "https://packetstormsecurity.com/files/138567"}, {"source": "disclosure@vulncheck.com", "url": "https://www.exploit-db.com/exploits/40324/"}, {"source": "disclosure@vulncheck.com", "url": "https://www.vulncheck.com/advisories/zkteco-zkbiosecurity-hardcoded-credentials-remote-code-execution"}, {"source": "disclosure@vulncheck.com", "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2016-5362.php"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-798"}], "source": "disclosure@vulncheck.com", "type": "Primary"}]}

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