VULNERABILITY INTELLIGENCE

CVE-2026-39906

CVSS score10 CRITICAL
EPSS probability0.69%
CISA KEVNot currently listed
Published2026-04-14
Last modified2026-07-24
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-441

Primary references