CVE-2025-66631

Published December 9th, 2025

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CVSS v3

9.8

CRITICAL

CVSS v2

N/A

Affected

PROJECT

Description

CSLA .NET is a framework designed for the development of reusable, object-oriented business layers for applications. Versions 5.5.4 and below allow the use of WcfProxy. WcfProxy uses the now-obsolete NetDataContractSerializer (NDCS) and is vulnerable to remote code execution during deserialization. This vulnerability is fixed in version 6.0.0. To workaround this issue, remove the WcfProxy in data portal configurations.

MarimerLLC/csla

A home for your business logic in any .NET application.

GitHub

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