CVE-2026-39907
CriticalCVSS 10.0Exploitation Probability (EPSS)
Low risk46th percentile - higher than 46% of all known CVEs
Summary
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. Remote attackers can send crafted SOAP requests with UNC paths to force the server to initiate outbound SMB connections, leaking NTLMv2 machine-account hashes. These credentials can be used for privilege escalation or lateral movement.
Risk Assessment
An attacker can capture NTLMv2 machine-account hashes, potentially enabling privilege escalation and lateral movement within the network, possibly leading to full domain compromise.
Recommendation
Restrict access to TCP port 1208 to trusted hosts only, update the software, or apply workarounds to block unauthorized SOAP requests.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS