by Kastro
Paper/Archive/CVE-2026-39906

CVE-2026-39906

Unisys WebPerfect Image Suite — Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting

EPSS 0.7%CVSS 10.0
critical.is priorityof 100
41
CVSS 10.0 (NVD)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 52.7.527 × 2010.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
WebPerfect Image Suite3.0.3960.22810–CNA
WebPerfect Image Suite3.0.3960.22604–CNA

Scores by source

NVD10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
VulnCheck (CNA)7.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

exploitgist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129refunisys.com/solutions/cai/applicationswriteupvulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remoting