CVE-2026-39907
Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via WCF SOAP
- State
- Published
- Severity
- 7.0 High
- Published
- Apr 14, 2026
- Updated
- May 8, 2026
- Reserved
- Apr 7, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 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 | VulnCheck |
Weaknesses
- CWE-73 External Control of File Name or Path
Affected Products
| Product | Versions |
|---|---|
WebPerfect Image SuiteUnisys |
|
References
- https://gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129technical-descriptionexploit
- https://www.unisys.com/solutions/cai/applications/product
- https://www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-wcf-soapthird-party-advisory
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