{"id":"CVE-2025-66631","state":"PUBLISHED","title":"CSLA .NET is vulnerable to Remote Code Execution via WcfProxy","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.","publishedAt":"2025-12-09T03:18:37.698Z","updatedAt":"2025-12-09T15:15:06.460Z","severity":{"score":7.2,"label":"High","version":"4.0","vector":"CVSS: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","source":"GitHub_M"},"assigner":"GitHub_M","products":["MarimerLLC csla"],"affected":[{"vendor":"MarimerLLC","product":"csla","versions":[{"version":"< 6.0.0","status":"affected"}]}],"references":["https://github.com/MarimerLLC/csla/security/advisories/GHSA-wq34-7f4g-953v","https://github.com/MarimerLLC/csla/issues/4001","https://github.com/MarimerLLC/csla/pull/4018"],"weaknesses":["CWE-502"],"ingestedAt":"2026-10-29T20:09:56.034Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/66xxx/CVE-2025-66631.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-66631","state":"PUBLISHED","datePublished":"2025-12-09T03:18:37.698Z","dateUpdated":"2025-12-09T15:15:06.460Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2025-12-05T15:42:44.716Z"},"containers":{"cna":{"title":"CSLA .NET is vulnerable to Remote Code Execution via WcfProxy","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"MarimerLLC","product":"csla","versions":[{"version":"< 6.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/MarimerLLC/csla/security/advisories/GHSA-wq34-7f4g-953v","name":"https://github.com/MarimerLLC/csla/security/advisories/GHSA-wq34-7f4g-953v","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/MarimerLLC/csla/issues/4001","name":"https://github.com/MarimerLLC/csla/issues/4001","tags":["x_refsource_MISC"]},{"url":"https://github.com/MarimerLLC/csla/pull/4018","name":"https://github.com/MarimerLLC/csla/pull/4018","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.2,"baseSeverity":"HIGH","vectorString":"CVSS: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","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-502","lang":"en","description":"CWE-502: Deserialization of Untrusted Data","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2025-12-09T03:18:37.698Z"},"source":{"advisory":"GHSA-wq34-7f4g-953v","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-12-09T15:15:00.371059Z","id":"CVE-2025-66631","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-12-09T15:15:06.460Z"}}]}}}