CVE-2025-66631
criticalCSLA .NET is a framework designed for the development of reusable, object-oriented business layers for applications.
Vendor / product: Cslanet — csla .net
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.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2025-12-09 16:18
Modified: 2026-10-07 20:10
NVD status: Analyzed
Last synced 3 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
cslanet / csla_.net <6.0.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/MarimerLLC/csla/pull/4018
Patch / mitigation: https://github.com/MarimerLLC/csla/security/advisories/GHSA-wq34-7f4g-953v
References
- https://github.com/MarimerLLC/csla/issues/4001 security-advisories@github.com
- https://github.com/MarimerLLC/csla/pull/4018 security-advisories@github.com
- https://github.com/MarimerLLC/csla/security/advisories/GHSA-wq34-7f4g-953v security-advisories@github.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗