CVE-2026-39906

7.0 highEPSS 0.7%

High (7.0) in unisys webperfect image suite. EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

7.0 high

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 3.1

10.0 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWE: CWE-441
Published: 2026-04-14
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

Affected

unisys:webperfect_image_suite

References

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