CVEvulnerability

CVE-2026-11857

8.4 HIGH Published 2026-06-17 Modified 2026-10-25 Official page ↗
Status
Deferred
Published
2026-06-17
Last modified
2026-10-25
Assigner
551230f0-3615-47bd-b7cc-93e92e730bbf
CVSS 4.0 (551230f0-3615-47bd-b7cc-93e92e730bbf)
8.4 HIGH — CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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
Weaknesses
CWE-502

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 context of the update process with NT AUTHORITY\SYSTEM privileges. Network-only exploitation is not possible and local host access with an authenticated user session is required.

Related

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References