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Vulnerability Details :

CVE-2026-39906

Summary
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At-14 Apr, 2026 | 21:21
Updated At-14 May, 2026 | 16:06
Rejected At-
Credits

Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulnCheck
Assigner Org ID:83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At:14 Apr, 2026 | 21:21
Updated At:14 May, 2026 | 16:06
Rejected At:
▼CVE Numbering Authority (CNA)
Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting

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.

Affected Products
Vendor
Unisys
Product
WebPerfect Image Suite
Default Status
unknown
Versions
Affected
  • 3.0.3960.22810 (custom)
  • 3.0.3960.22604 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-441Unintended Proxy or Intermediary ('Confused Deputy')
Type: CWE
CWE ID: CWE-441
Description: Unintended Proxy or Intermediary ('Confused Deputy')
Metrics
VersionBase scoreBase severityVector
4.07.0HIGH
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
Version: 4.0
Base score: 7.0
Base severity: HIGH
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Victor A. Morales, Senior Pentester Team Leader, GM Sectec, Corp.
coordinator
VulnCheck
Timeline
EventDate
VulnCheck, as the third-party coordinator and intermediary, initiated outreach to Unisys and other potentially-related entities.2025-12-15 17:00:00
Event: VulnCheck, as the third-party coordinator and intermediary, initiated outreach to Unisys and other potentially-related entities.
Date: 2025-12-15 17:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129
technical-description
exploit
https://www.unisys.com/solutions/cai/applications/
product
https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remoting
third-party-advisory
Hyperlink: https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129
Resource:
technical-description
exploit
Hyperlink: https://www.unisys.com/solutions/cai/applications/
Resource:
product
Hyperlink: https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remoting
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:disclosure@vulncheck.com
Published At:14 Apr, 2026 | 22:16
Updated At:06 May, 2026 | 14:38

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.07.0HIGH
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
Primary3.110.0CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Type: Secondary
Version: 4.0
Base score: 7.0
Base severity: HIGH
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/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
Type: Primary
Version: 3.1
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CPE Matches
unisys
unisys
>>webperfect_image_suite>>3.0.3960.22604
cpe:2.3:a:unisys:webperfect_image_suite:3.0.3960.22604:*:*:*:*:*:*:*
unisys
unisys
>>webperfect_image_suite>>3.0.3960.22810
cpe:2.3:a:unisys:webperfect_image_suite:3.0.3960.22810:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-441Secondarydisclosure@vulncheck.com
CWE ID: CWE-441
Type: Secondary
Source: disclosure@vulncheck.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129disclosure@vulncheck.com
Exploit
Third Party Advisory
https://www.unisys.com/solutions/cai/applications/disclosure@vulncheck.com
Product
https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remotingdisclosure@vulncheck.com
Third Party Advisory
Hyperlink: https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129
Source: disclosure@vulncheck.com
Resource:
Exploit
Third Party Advisory
Hyperlink: https://www.unisys.com/solutions/cai/applications/
Source: disclosure@vulncheck.com
Resource:
Product
Hyperlink: https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remoting
Source: disclosure@vulncheck.com
Resource:
Third Party Advisory

Change History

0
Information is not available yet

Similar CVEs

1Records found
CVE-2026-39907
Matching Score-8
Assigner-VulnCheck
ShareView Details
Matching Score-8
Assigner-VulnCheck
CVSS Score-7||HIGH
EPSS-0.62% / 45.24%
||
7 Day CHG~0.00%
Published-14 Apr, 2026 | 21:21
Updated-08 May, 2026 | 14:08
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via WCF SOAP

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.

Action-Not Available
Vendor-unisysUnisys
Product-webperfect_image_suiteWebPerfect Image Suite
CWE ID-CWE-73
External Control of File Name or Path
Details not found