CVE-2026-39907 PUBLISHED

Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via WCF SOAP

Assigner: VulnCheck
Reserved: 07.04.2026 Published: 14.04.2026 Updated: 14.04.2026

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.

Metrics

CVSS 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
CVSS Score: 7

Product Status

Vendor Unisys
Product WebPerfect Image Suite
Versions Default: unknown
  • Version 3.0.3960.22810 is affected
  • Version 3.0.3960.22604 is affected

Credits

  • Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp. finder
  • VulnCheck coordinator

References

Problem Types

  • CWE-73 External Control of File Name or Path CWE