Critical severity10.0NVD Advisory· Published Apr 14, 2026· Updated May 6, 2026
CVE-2026-39906
CVE-2026-39906
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:unisys:webperfect_image_suite:3.0.3960.22604:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:unisys:webperfect_image_suite:3.0.3960.22604:*:*:*:*:*:*:*
- cpe:2.3:a:unisys:webperfect_image_suite:3.0.3960.22810:*:*:*:*:*:*:*
- (no CPE)range: 3.0.3960.22810 and 3.0.3960.22604
Patches
Vulnerability mechanics
References
3- gist.github.com/VAMorales/be3e4ed472c51794493c1256cce16129nvdExploitThird Party Advisory
- www.vulncheck.com/advisories/unisys-webperfect-image-suite-ntlmv2-hash-leakage-via-net-remotingnvdThird Party Advisory
- www.unisys.com/solutions/cai/applications/nvdProduct
News mentions
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