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.
Published: 2026-04-14
Score: 7 High
EPSS: < 1% Very Low
KEV: No
Impact: NTLMv2 hash leakage leading to potential privilege escalation and lateral movement
Action: Immediate Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 06 May 2026 14:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:unisys:webperfect_image_suite:3.0.3960.22604:*:*:*:*:*:*:*
cpe:2.3:a:unisys:webperfect_image_suite:3.0.3960.22810:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 10.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}


Thu, 23 Apr 2026 15:45:00 +0000

Type Values Removed Values Added
References

Thu, 16 Apr 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 15 Apr 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Unisys
Unisys webperfect Image Suite
Vendors & Products Unisys
Unisys webperfect Image Suite

Tue, 14 Apr 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting
Weaknesses CWE-441
References
Metrics cvssV4_0

{'score': 7, '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'}


Subscriptions

Unisys Webperfect Image Suite
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-14T16:06:18.439Z

Reserved: 2026-04-07T20:57:06.209Z

Link: CVE-2026-39906

cve-icon Vulnrichment

Updated: 2026-04-16T13:50:48.894Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-14T22:16:32.160

Modified: 2026-05-06T14:38:44.533

Link: CVE-2026-39906

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-15T14:53:55Z

Weaknesses