{"id":"CVE-2026-18397","state":"PUBLISHED","title":"SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability","description":"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.","publishedAt":"2026-10-01T21:49:42.379Z","updatedAt":"2026-10-02T19:42:28.086Z","severity":{"score":9.4,"label":"Critical","version":"4.0","vector":"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","source":"THA-PSIRT"},"assigner":"THA-PSIRT","products":["Thales SConnect"],"affected":[{"vendor":"Thales","product":"SConnect","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.16.1.0","versionType":"custom"}]}],"references":["https://www.thalesgroup.com/en/product-security-incident-response"],"weaknesses":["CWE-347","CWE-130","CWE-457","CWE-252"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/18xxx/CVE-2026-18397.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18397","state":"PUBLISHED","datePublished":"2026-10-01T21:49:42.379Z","dateUpdated":"2026-10-02T19:42:28.086Z","assignerShortName":"THA-PSIRT","assignerOrgId":"9d5917ae-205d-4ae5-8749-1f49479b1395","dateReserved":"2026-07-30T14:55:56.425Z"},"containers":{"cna":{"title":"SConnect: Native Host Unauthenticated Remote Code Execution Vulnerability","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."}],"affected":[{"vendor":"Thales","product":"SConnect","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2.16.1.0","versionType":"custom"}]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347 Improper verification of cryptographic signature","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-130","lang":"en","description":"CWE-130 Improper handling of length parameter inconsistency","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-457","lang":"en","description":"CWE-457 Use of uninitialized variable","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-252","lang":"en","description":"CWE-252 Unchecked return value","type":"CWE"}]}],"providerMetadata":{"shortName":"THA-PSIRT","orgId":"9d5917ae-205d-4ae5-8749-1f49479b1395","dateUpdated":"2026-10-01T21:49:42.379Z"},"datePublic":"2026-10-01T22:10:00.000Z","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"}]}],"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"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-02T19:40:04.994465Z","id":"CVE-2026-18397","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-02T19:42:28.086Z"}}]}}}