{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-11857", "assignerOrgId": "551230f0-3615-47bd-b7cc-93e92e730bbf", "state": "PUBLISHED", "assignerShortName": "SEC-VLab", "dateReserved": "2026-06-10T09:08:22.916Z", "datePublished": "2026-06-17T11:42:02.012Z", "dateUpdated": "2026-06-17T14:56:58.522Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "551230f0-3615-47bd-b7cc-93e92e730bbf", "shortName": "SEC-VLab", "dateUpdated": "2026-06-17T11:42:02.012Z"}, "title": "Insecure .NET Remoting deserialization in Quanos SCHEMA ST4 Client Update Service allows local privilege escalation", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-502", "description": "CWE-502 Deserialization of untrusted data", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-586", "descriptions": [{"lang": "en", "value": "CAPEC-586 Object Injection"}]}], "affected": [{"vendor": "Quanos Solutions GmbH", "product": "SCHEMA ST4", "versions": [{"status": "affected", "version": "SCHEMA ST4 on-premises, all versions", "versionType": "custom"}], "defaultStatus": "affected"}], "descriptions": [{"lang": "en", "value": "Quanos SCHEMA ST4 on-premises contains a local privilege escalation vulnerability in the Client Update Service due to insecure deserialization in the .NET Remoting service. 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