CVE-2026-39906

HIGH EPSS 48.0%
Published Apr 14, 20262mo ago · Modified Jun 17, 20261w ago
7.0 CVSS 4.0
High
Find Similar
Published Apr 14, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
7.0
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
48.0% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-441

Affected Products 2

VendorProductVersionRange
unisyswebperfect_image_suite3.0.3960.22604any
unisyswebperfect_image_suite3.0.3960.22810any

References 3

  • gist.github.com https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129
    ExploitThird Party Advisory
  • unisys.com https://www.unisys.com/solutions/cai/applications/
    Product
  • vulncheck.com https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remoting
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.