{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-6444","assignerOrgId":"99f1926a-a320-47d8-bbb5-42feb611262e","state":"PUBLISHED","assignerShortName":"zdi","dateReserved":"2025-06-20T17:16:49.894Z","datePublished":"2025-06-25T17:41:36.933Z","dateUpdated":"2025-06-25T18:09:55.731Z"},"containers":{"cna":{"providerMetadata":{"orgId":"99f1926a-a320-47d8-bbb5-42feb611262e","shortName":"zdi","dateUpdated":"2025-06-25T17:41:36.933Z"},"title":"ServiceStack GetErrorResponse Improper Input Validation NTLM Relay Vulnerability","descriptions":[{"lang":"en","value":"ServiceStack GetErrorResponse Improper Input Validation NTLM Relay Vulnerability. This vulnerability allows remote attackers to relay NTLM credentials on affected installations of ServiceStack. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation.\n\nThe specific flaw exists within the implementation of the GetErrorResponse method. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to relay NTLM credentials in the context of the current user. Was ZDI-CAN-25834."}],"affected":[{"vendor":"ServiceStack","product":"ServiceStack","versions":[{"version":"8.4.0","status":"affected"}],"defaultStatus":"unknown"}],"problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-20","description":"CWE-20: Improper Input Validation","type":"CWE"}]}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-25-415/","name":"ZDI-25-415","tags":["x_research-advisory"]}],"dateAssigned":"2025-06-20T17:16:49.959Z","datePublic":"2025-06-23T14:02:07.908Z","source":{"lang":"en","value":"Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative"},"metrics":[{"format":"CVSS","cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":5.9,"baseSeverity":"MEDIUM"}}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-06-25T18:09:41.688322Z","id":"CVE-2025-6444","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-06-25T18:09:55.731Z"}}]}}