{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-11857/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-17T14:56:58.522Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-11857","@id":"https://www.cve.org/CVERecord?id=CVE-2026-11857","description":"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. The service is configured with TypeFilterLevel.Full and is bound to local interfaces only through named pipes. A local authenticated attacker can connect to the local named pipe, obtain the .NET Remoting endpoint, and send specially crafted serialized objects. Successful exploitation results in arbitrary code execution in the"},"products":[{"@id":"cpe:2.3:a:quanos_solutions_gmbh:schema_st4:schema_st4_on-premises\\,_all_versions:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:quanos_solutions_gmbh:schema_st4:schema_st4_on-premises\\,_all_versions:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-17T14:56:58.522Z"}]}