{"id":"CVE-2026-39906","state":"PUBLISHED","title":"Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting","description":"Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.0.3960.22604 expose a deprecated .NET Remoting TCP channel that allows remote unauthenticated attackers to leak NTLMv2 machine-account hashes by supplying a Windows UNC path as a target file argument through object-unmarshalling techniques. Attackers can capture the leaked NTLMv2 hash and relay it to other hosts to achieve privilege escalation or lateral movement depending on network configuration and patch level.","publishedAt":"2026-04-14T21:21:21.739Z","updatedAt":"2026-05-14T16:06:18.439Z","severity":{"score":7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["Unisys WebPerfect Image Suite"],"affected":[{"vendor":"Unisys","product":"WebPerfect Image Suite","defaultStatus":"unknown","versions":[{"version":"3.0.3960.22810","status":"affected","versionType":"custom"},{"version":"3.0.3960.22604","status":"affected","versionType":"custom"}]}],"references":["https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129","https://www.unisys.com/solutions/cai/applications/","https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remoting"],"weaknesses":["CWE-441"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/39xxx/CVE-2026-39906.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-39906","state":"PUBLISHED","datePublished":"2026-04-14T21:21:21.739Z","dateUpdated":"2026-05-14T16:06:18.439Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-04-07T20:57:06.209Z"},"containers":{"cna":{"title":"Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting","descriptions":[{"lang":"en","value":"Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.0.3960.22604 expose a deprecated .NET Remoting TCP channel that allows remote unauthenticated attackers to leak NTLMv2 machine-account hashes by supplying a Windows UNC path as a target file argument through object-unmarshalling techniques. 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