CVE-2026-39907 Details
Description
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.
A vulnerability exists in Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.0.3960.22604, where an unauthenticated WCF SOAP endpoint on TCP port 1208 exposes the ReadLicense action's LFName parameter to unsanitized file paths. This flaw allows remote attackers to initiate SMB connections that leak NTLMv2 machine-account hashes. By crafting SOAP requests with UNC paths, attackers can force the server to make outbound SMB connections, revealing authentication credentials that could be relayed for privilege escalation or lateral movement within the network.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 15, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129 | [email protected] | ExploitThird Party Advisory |
| https://www.unisys.com/solutions/cai/applications/ | [email protected] | Product |
| https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-wcf-soap | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-73 | External Control of File Name or Path | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| unisys webperfect image suite | 3.0.3960.22604 3.0.3960.22810 |
CPE
Remediation
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Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 6, 2026 | Initial Analysis | [email protected] |
| Apr 23, 2026 | CVE Modified | [email protected] |
| Apr 14, 2026 | New CVE Received | [email protected] |