CVE-2025-66631 | THREATINT

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.

PUBLISHED Reserved 2025-12-05 | Published 2025-12-09 | Updated 2025-12-09 | Assigner GitHub_M

HIGH: 7.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

Problem types

CWE-502: Deserialization of Untrusted Data

Product status

< 6.0.0

affected

References

github.com/...C/csla/security/advisories/GHSA-wq34-7f4g-953v

github.com/MarimerLLC/csla/issues/4001

github.com/MarimerLLC/csla/pull/4018

cve.org (CVE-2025-66631)

nvd.nist.gov (CVE-2025-66631)

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