{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18397", "assignerOrgId": "9d5917ae-205d-4ae5-8749-1f49479b1395", "state": "PUBLISHED", "assignerShortName": "THA-PSIRT", "dateReserved": "2026-07-30T14:55:56.425Z", "datePublished": "2026-10-01T21:49:42.379Z", "dateUpdated": "2026-10-01T21:49:42.379Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9d5917ae-205d-4ae5-8749-1f49479b1395", "shortName": "THA-PSIRT", "dateUpdated": "2026-10-01T21:49:42.379Z"}, "title": "SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability", "datePublic": "2026-10-01T22:10:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-347", "description": "CWE-347 Improper verification of cryptographic signature", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-130", "description": "CWE-130 Improper handling of length parameter inconsistency", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-457", "description": "CWE-457 Use of uninitialized variable", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-252", "description": "CWE-252 Unchecked return value", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-475", "descriptions": [{"lang": "en", "value": "CAPEC-475 Signature Spoofing by Improper Validation"}]}, {"capecId": "CAPEC-47", "descriptions": [{"lang": "en", "value": "CAPEC-47 Buffer Overflow via Parameter Expansion"}]}, {"capecId": "CAPEC-463", "descriptions": [{"lang": "en", "value": "CAPEC-463 Padding Oracle Crypto Attack"}]}], "affected": [{"vendor": "Thales", "product": "SConnect", "versions": [{"status": "affected", "version": "0", "lessThan": "2.16.1.0", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "This vulnerability enables unauthenticated remote code execution (RCE) on a victim's machine by exploiting a combination of cryptographic weaknesses and memory management issues in the SConnect native host component.\n\nThe attack leverages an unrestricted messaging interface between an attacker-controlled web page and the native host, allowing malicious input to bypass security checks.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div>\nThis vulnerability enables <strong>unauthenticated remote code execution (RCE)</strong> on a victim's machine by exploiting a <b>combination </b>of cryptographic weaknesses and memory management issues in the <strong>SConnect native host</strong> component.</div><div>The attack leverages an <strong>unrestricted messaging interface</strong> between an attacker-controlled web page and the native host, allowing malicious input to bypass security checks.\n\n</div>"}]}], "references": [{"url": "https://www.thalesgroup.com/en/product-security-incident-response", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "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": 9.4, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"}}], "credits": [{"lang": "en", "value": "Thales would like to thank James Arnott from Bay Area Labs for his coordinated disclosure and valuable contribution.", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.4"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "SConnect", "vendor": "Thales", "versions": [{"lessThan": "2.16.1.0", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "psirt@thalesgroup.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "This vulnerability enables unauthenticated remote code execution (RCE) on a victim's machine by exploiting a combination of cryptographic weaknesses and memory management issues in the SConnect native host component.\n\nThe attack leverages an unrestricted messaging interface between an attacker-controlled web page and the native host, allowing malicious input to bypass security checks."}], "id": "CVE-2026-18397", "lastModified": "2026-10-01T22:17:01.220", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.4, "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": "HIGH", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "HIGH", "userInteraction": "PASSIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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": "psirt@thalesgroup.com", "type": "Secondary"}]}, "published": "2026-10-01T22:17:01.220", "references": [{"source": "psirt@thalesgroup.com", "url": "https://www.thalesgroup.com/en/product-security-incident-response"}], "sourceIdentifier": "psirt@thalesgroup.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-130"}, {"lang": "en", "value": "CWE-252"}, {"lang": "en", "value": "CWE-347"}, {"lang": "en", "value": "CWE-457"}], "source": "psirt@thalesgroup.com", "type": "Secondary"}]}

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