🛡️ CVE-2026-39906 — webperfect-image-suite

🔴 CVSS 10.0 — Critical ⚠️ Exploit Public CWE-441 NVD
10.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2026-39906 is recorded against 1 package.

  • webperfect-image-suite

Timeline and source

Published on 14 April 2026 and last revised on 24 July 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

gist.github.com
www.unisys.com
www.vulncheck.com

Details

Severity CRITICAL
CVSS Score 10.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE CWE-441
Public Exploit ⚠️ Yes
Source NVD
Published 2026-04-14
Updated 2026-08-11
Modified 2026-07-24
Fix URL N/A

Affected Packages

Software From version Fixed in
webperfect-image-suite — —

Similar Threats

Exploit Protection

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CVE-2026-39906 carries CVSS 10.0 Critical rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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