CVE-2026-3437

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3437", "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "state": "PUBLISHED", "assignerShortName": "icscert", "dateReserved": "2026-03-02T13:08:19.404Z", "datePublished": "2026-03-03T17:44:59.904Z", "dateUpdated": "2026-06-25T14:49:33.196Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-06-25T14:49:33.196Z"}, "title": "Improper Restriction of Operations within the Bounds of a Memory Buffer in Portwell Engineering Toolkits", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-119", "description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer", "type": "CWE"}]}], "affected": [{"vendor": "Portwell", "product": "Portwell Engineering Toolkits", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "4.8.2", "versionType": "custom"}, {"status": "unaffected", "version": "v5.0.0"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "An improper restriction of operations within the bounds of a memory buffer vulnerability in Portwell Engineering Toolkits version 4.8.2 could allow a local authenticated attacker to read and write to arbitrary memory via the Portwell Engineering Toolkits driver. Successful exploitation of this vulnerability could result in escalation of privileges or cause a denial-of-service condition.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>An improper restriction of operations within the bounds of a memory buffer vulnerability in Portwell Engineering Toolkits version 4.8.2 could allow a local authenticated attacker to read and write to arbitrary memory via the Portwell Engineering Toolkits driver. Successful exploitation of this vulnerability could result in escalation of privileges or cause a denial-of-service condition.</p><br>"}]}], "references": [{"url": "https://software.portwell.tw/security-advisory/PWS-2026-3437.html", "tags": ["vendor-advisory", "patch"]}, {"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-04"}, {"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-062-04.json"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.3, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"}}], "solutions": [{"lang": "en", "value": "Remediation\nStatus: \n\n\n\n\n\n\u00a0\u00a0\u00a0-\nAffected: Portwell Engineering Toolkits Version 4.8.2 and earlier\n\n\n\n\n\n\u00a0\u00a0 -\nFixed Version: Portwell Engineering Toolkits version [v5.0.0]", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p><span>Remediation\nStatus: </span></p>\n\n<p><span>&nbsp;&nbsp;&nbsp;-\nAffected: Portwell Engineering Toolkits Version 4.8.2 and earlier</span></p>\n\n<p><span>&nbsp;&nbsp; -\nFixed Version: Portwell Engineering Toolkits version [</span><span>v5.0.0</span><span>]</span></p>"}]}], "credits": [{"lang": "en", "value": "Jason Huang from Cyber Threat & Product Defense Center of TXOne Networks Inc.", "type": "finder"}], "source": {"advisory": "ICSA-26-062-04", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.5.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-03-03T18:58:38.290857Z", "id": "CVE-2026-3437", "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": "2026-03-03T19:02:29.314Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-3437", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-03-03T18:58:38.290857Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-03T19:02:18.205Z"}}], "cna": {"title": "Improper Restriction of Operations within the Bounds of a Memory Buffer in Portwell Engineering Toolkits", "source": {"advisory": "ICSA-26-062-04", "discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Jason Huang from Cyber Threat & Product Defense Center of TXOne Networks Inc."}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 9.3, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "CRITICAL", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}, {"format": "CVSS", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Portwell", "product": "Portwell Engineering Toolkits", "versions": [{"status": "affected", "version": "0", "versionType": "custom", "lessThanOrEqual": "4.8.2"}, {"status": "unaffected", "version": "v5.0.0"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Remediation\nStatus: \n\n\n\n\n\n\u00a0\u00a0\u00a0-\nAffected: Portwell Engineering Toolkits Version 4.8.2 and earlier\n\n\n\n\n\n\u00a0\u00a0 -\nFixed Version: Portwell Engineering Toolkits version [v5.0.0]", "supportingMedia": [{"type": "text/html", "value": "<p><span>Remediation\nStatus: </span></p>\n\n<p><span>&nbsp;&nbsp;&nbsp;-\nAffected: Portwell Engineering Toolkits Version 4.8.2 and earlier</span></p>\n\n<p><span>&nbsp;&nbsp; -\nFixed Version: Portwell Engineering Toolkits version [</span><span>v5.0.0</span><span>]</span></p>", "base64": false}]}], "references": [{"url": "https://software.portwell.tw/security-advisory/PWS-2026-3437.html", "tags": ["vendor-advisory", "patch"]}, {"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-04"}, {"url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-062-04.json"}], "x_generator": {"engine": "Vulnogram 0.5.0"}, "descriptions": [{"lang": "en", "value": "An improper restriction of operations within the bounds of a memory buffer vulnerability in Portwell Engineering Toolkits version 4.8.2 could allow a local authenticated attacker to read and write to arbitrary memory via the Portwell Engineering Toolkits driver. Successful exploitation of this vulnerability could result in escalation of privileges or cause a denial-of-service condition.", "supportingMedia": [{"type": "text/html", "value": "<p>An improper restriction of operations within the bounds of a memory buffer vulnerability in Portwell Engineering Toolkits version 4.8.2 could allow a local authenticated attacker to read and write to arbitrary memory via the Portwell Engineering Toolkits driver. Successful exploitation of this vulnerability could result in escalation of privileges or cause a denial-of-service condition.</p><br>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-119", "description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"}]}], "providerMetadata": {"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-06-25T14:49:33.196Z"}}}, "cveMetadata": {"cveId": "CVE-2026-3437", "state": "PUBLISHED", "dateUpdated": "2026-06-25T14:49:33.196Z", "dateReserved": "2026-03-02T13:08:19.404Z", "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "datePublished": "2026-03-03T17:44:59.904Z", "assignerShortName": "icscert"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Portwell Engineering Toolkits", "vendor": "Portwell", "versions": [{"lessThanOrEqual": "4.8.2", "status": "affected", "version": "0", "versionType": "custom"}, {"status": "unaffected", "version": "v5.0.0"}]}], "source": "ics-cert@hq.dhs.gov"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:portwell:engineering_toolkits:4.8.2:*:*:*:*:*:*:*", "matchCriteriaId": "21B2CD9E-A22D-4482-9961-FA4A536689C2", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An improper restriction of operations within the bounds of a memory buffer vulnerability in Portwell Engineering Toolkits version 4.8.2 could allow a local authenticated attacker to read and write to arbitrary memory via the Portwell Engineering Toolkits driver. Successful exploitation of this vulnerability could result in escalation of privileges or cause a denial-of-service condition."}, {"lang": "es", "value": "Una vulnerabilidad de Restricci\u00f3n Inadecuada de Operaciones dentro de los L\u00edmites de un B\u00fafer de Memoria en Portwell Engineering Toolkits versi\u00f3n 4.8.2 podr\u00eda permitir a un atacante local autenticado leer y escribir en memoria arbitraria a trav\u00e9s del controlador de Portwell Engineering Toolkits. La explotaci\u00f3n exitosa de esta vulnerabilidad podr\u00eda resultar en escalada de privilegios o causar una condici\u00f3n de denegaci\u00f3n de servicio."}], "id": "CVE-2026-3437", "lastModified": "2026-06-25T16:16:34.810", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.0, "impactScore": 6.0, "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}, {"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": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "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:H/SI:H/SA:H/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": "ics-cert@hq.dhs.gov", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-3437", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-03T18:58:38.290857Z", "version": "2.0.3"}}]}, "published": "2026-03-03T18:16:25.953", "references": [{"source": "ics-cert@hq.dhs.gov", "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-062-04.json"}, {"source": "ics-cert@hq.dhs.gov", "url": "https://software.portwell.tw/security-advisory/PWS-2026-3437.html"}, {"source": "ics-cert@hq.dhs.gov", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-062-04"}], "sourceIdentifier": "ics-cert@hq.dhs.gov", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-119"}], "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "4.8.2"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Portwell Engineering Toolkits", "source": "cna", "vendor": "Portwell"}, "product": "portwell_engineering_toolkits", "vendor": "portwell"}], "created": "2026-03-04T14:54:10.615871+00:00", "updated": "2026-06-25T16:30:15.472802+00:00", "vendors": ["portwell", "portwell$PRODUCT$portwell_engineering_toolkits"]}