by Kastro
Paper/Archive/CVE-2026-39907

CVE-2026-39907

Unisys WebPerfect Image Suite — Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via WCF SOAP

EPSS 0.6%CVSS 10.0
critical.is priorityof 100
40
CVSS 10.0 (NVD)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 49.6.496 × 209.9No 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 an unauthenticated WCF SOAP endpoint on TCP port 1208 that accepts unsanitized file paths in the ReadLicense action's LFName parameter, allowing remote attackers to trigger SMB connections and leak NTLMv2 machine-account hashes. Attackers can submit crafted SOAP requests with UNC paths to force the server to initiate outbound SMB connections, exposing authentication credentials that may be relayed for privilege escalation or lateral movement within the network.

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: no · Technical impact: partial

References

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