CVE-2026-18768

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18768", "assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c", "state": "PUBLISHED", "assignerShortName": "CERTVDE", "dateReserved": "2026-08-04T07:16:36.454Z", "datePublished": "2026-11-11T08:19:58.767Z", "dateUpdated": "2026-11-12T17:58:05.180Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "TcRouter.sys for Windows on x64 3.1.0.2364", "vendor": "Beckhoff Automation", "versions": [{"status": "affected", "version": "3.1.0.2364"}]}, {"defaultStatus": "unaffected", "product": "TcRouter.sys for Windows on x64 <3.1.0.2365", "vendor": "Beckhoff Automation", "versions": [{"lessThan": "3.1.0.2365", "status": "affected", "version": "1.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "TcRouter.sys for Windows on x86 3.1.0.2364", "vendor": "Beckhoff Automation", "versions": [{"status": "affected", "version": "3.1.0.2364"}]}, {"defaultStatus": "unaffected", "product": "TcRouter.sys for Windows on x86 <3.1.0.2365", "vendor": "Beckhoff Automation", "versions": [{"lessThan": "3.1.0.2365", "status": "affected", "version": "1.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "TwinCAT.XAR.Base.KM 3.16.29", "vendor": "Beckhoff Automation", "versions": [{"status": "affected", "version": "3.16.29"}]}, {"defaultStatus": "unaffected", "product": "TwinCAT.XAR.Base.KM <3.18.1", "vendor": "Beckhoff Automation", "versions": [{"lessThan": "3.18.1", "status": "affected", "version": "1.0.0", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:beckhoff:tcrouter.sys:3.1.0.2364:*:*:*:*:Windows:x64:*", "versionStartIncluding": "3.1.0.2364", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:beckhoff:tcrouter.sys:*:*:*:*:*:Windows:x64:*", "versionEndExcluding": "3.1.0.2365", "versionStartIncluding": "1.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:beckhoff:tcrouter.sys:3.1.0.2364:*:*:*:*:Windows:x86:*", "versionStartIncluding": "3.1.0.2364", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:beckhoff:tcrouter.sys:*:*:*:*:*:Windows:x86:*", "versionEndExcluding": "3.1.0.2365", "versionStartIncluding": "1.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:beckhoff:twincat.xar.base.km:3.16.29:tcpkg:*:*:*:Windows:*:*", "versionStartIncluding": "3.16.29", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:beckhoff:twincat.xar.base.km:tcpkg:*:*:*:*:Windows:*:*", "versionEndExcluding": "3.18.1", "versionStartIncluding": "1.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}], "credits": [{"lang": "en", "type": "finder", "value": "Chi Siang Choo from 4rthur Security Team"}, {"lang": "en", "type": "finder", "value": "Julian Horoszkiewicz"}, {"lang": "en", "type": "finder", "value": "Patrick Saif"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>A local low privileged attacker can access arbitrary physical memory or define its mapping via TcRouter.sys because of exposed IOCTL function calls resulting in a full compromise of the affected devices.</p>"}], "value": "A local low privileged attacker can access arbitrary physical memory or define its mapping via TcRouter.sys because of exposed IOCTL function calls resulting in a full compromise of the affected devices."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "baseScore": 8.5, "baseSeverity": "HIGH", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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", "scenarios": [{"lang": "en", "value": "GENERAL"}]}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-782", "description": "CWE-782 Exposed IOCTL with Insufficient Access Control", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c", "shortName": "CERTVDE", "dateUpdated": "2026-11-11T08:19:58.767Z"}, "references": [{"url": "https://www.certvde.com/en/advisories/VDE-2026-087/"}], "source": {"advisory": "VDE-2026-087", "defect": ["CERT@VDE#642195"], "discovery": "UNKNOWN"}, "title": "Insufficient IOCTL access control allows local access to arbitrary physical memory", "x_generator": {"engine": "Vulnogram 0.4.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-11-12T16:31:09.412187Z", "id": "CVE-2026-18768", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-12T17:58:05.180Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "TcRouter.sys for Windows on x64 3.1.0.2364", "vendor": "Beckhoff Automation", "versions": [{"status": "affected", "version": "3.1.0.2364"}]}, {"defaultStatus": "unaffected", "product": "TcRouter.sys for Windows on x64 <3.1.0.2365", "vendor": "Beckhoff Automation", "versions": [{"lessThan": "3.1.0.2365", "status": "affected", "version": "1.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "TcRouter.sys for Windows on x86 3.1.0.2364", "vendor": "Beckhoff Automation", "versions": [{"status": "affected", "version": "3.1.0.2364"}]}, {"defaultStatus": "unaffected", "product": "TcRouter.sys for Windows on x86 <3.1.0.2365", "vendor": "Beckhoff Automation", "versions": [{"lessThan": "3.1.0.2365", "status": "affected", "version": "1.0.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "product": "TwinCAT.XAR.Base.KM 3.16.29", "vendor": "Beckhoff Automation", "versions": [{"status": "affected", "version": "3.16.29"}]}, {"defaultStatus": "unaffected", "product": "TwinCAT.XAR.Base.KM <3.18.1", "vendor": "Beckhoff Automation", "versions": [{"lessThan": "3.18.1", "status": "affected", "version": "1.0.0", "versionType": "semver"}]}], "source": "info@cert.vde.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A local low privileged attacker can access arbitrary physical memory or define its mapping via TcRouter.sys because of exposed IOCTL function calls resulting in a full compromise of the affected devices."}], "id": "CVE-2026-18768", "lastModified": "2026-11-12T20:07:11.090", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "info@cert.vde.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.5, "baseSeverity": "HIGH", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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": "info@cert.vde.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-18768", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-12T16:31:09.412187Z", "version": "2.0.3"}}]}, "published": "2026-11-11T09:17:15.313", "references": [{"source": "info@cert.vde.com", "url": "https://www.certvde.com/en/advisories/VDE-2026-087/"}], "sourceIdentifier": "info@cert.vde.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-782"}], "source": "info@cert.vde.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.1.0.2364"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "TcRouter.sys for Windows on x64 3.1.0.2364", "source": "cna", "vendor": "Beckhoff Automation"}, "product": "tcrouter.sys", "vendor": "beckhoff"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[1.0.0,3.1.0.2365)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "TcRouter.sys for Windows on x64 <3.1.0.2365", "source": "cna", "vendor": "Beckhoff Automation"}, "product": "tcrouter.sys", "vendor": "beckhoff"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "3.16.29"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "TwinCAT.XAR.Base.KM 3.16.29", "source": "cna", "vendor": "Beckhoff Automation"}, "product": "twincat.xar.base.km", "vendor": "beckhoff"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.0.0,3.18.1)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "TwinCAT.XAR.Base.KM <3.18.1", "source": "cna", "vendor": "Beckhoff Automation"}, "product": "twincat.xar.base.km", "vendor": "beckhoff"}], "created": "2026-11-12T01:30:05.185914+00:00", "updated": "2026-11-13T11:15:09.171092+00:00", "vendors": ["beckhoff", "beckhoff$PRODUCT$tcrouter.sys", "beckhoff$PRODUCT$twincat.xar.base.km"]}