Unisys WebPerfect Image Suite 3.0.3960.22604/3.0.3960.22810 WCF SOAP Endpoint LFName file inclusion

Summaryinfo

A vulnerability, which was classified as critical, has been found in Unisys WebPerfect Image Suite 3.0.3960.22604/3.0.3960.22810. Affected by this issue is some unknown functionality of the component WCF SOAP Endpoint. This manipulation of the argument LFName causes file inclusion. The identification of this vulnerability is CVE-2026-39907. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Unisys WebPerfect Image Suite 3.0.3960.22604/3.0.3960.22810. Affected by this vulnerability is an unknown functionality of the component WCF SOAP Endpoint. The manipulation of the argument LFName with an unknown input leads to a file inclusion vulnerability. The CWE definition for the vulnerability is CWE-73. The product allows user input to control or influence paths or file names that are used in filesystem operations. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was shared by Victor A. Morales. The advisory is shared at unisys.com. This vulnerability is known as CVE-2026-39907 since 04/07/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/15/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-22726). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Unisys

Name

• WebPerfect Image Suite

Version

• 3.0.3960.22604
• 3.0.3960.22810

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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