Search criteria
2 vulnerabilities found for SCHEMA ST4 by Quanos Solutions GmbH
CVE-2026-11858 (GCVE-0-2026-11858)
Vulnerability from cvelistv5 – Published: 2026-06-17 11:50 – Updated: 2026-06-17 14:56
VLAI?
Title
Missing authorization in Quanos SCHEMA ST4 Client Update Service allows arbitrary file overwrite as SYSTEM
Summary
Quanos SCHEMA ST4 on-premises contains a local privilege escalation vulnerability in the Client Update Service. The update service runs as NT AUTHORITY\SYSTEM and exposes a .NET Remoting interface over a named pipe without sufficient access controls or authorization. A local authenticated low-privileged user can connect to the interface and invoke privileged update methods such as Update(). This allows arbitrary file write and delete operations with SYSTEM privileges and can be used to achieve local privilege escalation.
Severity ?
CWE
- CWE-862 - Missing Authorization
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Quanos Solutions GmbH | SCHEMA ST4 |
Affected:
SCHEMA ST4 on-premises, all versions
|
Credits
Johannes Kruchem, SEC Consult Vulnerability Lab
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CVE-2026-11857 (GCVE-0-2026-11857)
Vulnerability from cvelistv5 – Published: 2026-06-17 11:42 – Updated: 2026-06-17 14:56
VLAI?
Title
Insecure .NET Remoting deserialization in Quanos SCHEMA ST4 Client Update Service allows local privilege escalation
Summary
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.
Severity ?
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
| URL | Tags | |
|---|---|---|
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Quanos Solutions GmbH | SCHEMA ST4 |
Affected:
SCHEMA ST4 on-premises, all versions
(custom)
|
Credits
Johannes Kruchem, SEC Consult Vulnerability Lab
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