# CVE-2026-39907: Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via WCF SOAP

> Remote attackers can leak NTLMv2 hashes via SSRF in WCF SOAP endpoints, enabling credential relay and lateral movement.

- **Severity:** High 7.0 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Apr 2026
- **Updated:** 8 May 2026
- **Also known as:** GHSA-8jpv-7gww-9r9j

## What is CVE-2026-39907?

CVE-2026-39907 is a high-severity server-side request forgery vulnerability in Unisys WebPerfect Image Suite, published on 14 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-73 (External Control of File Name or Path)

## Which versions are affected by CVE-2026-39907?

It affects 1 product.


Products: Unisys Webperfect Image Suite.

## How do I fix CVE-2026-39907?

No fix has been published for CVE-2026-39907 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-39907 being exploited?

There is no known exploitation of CVE-2026-39907 in the wild and no public exploit code.

## Other vulnerabilities in Unisys WebPerfect Image Suite

- [CVE-2026-39906](https://insights.sbomify.com/CVE-2026-39906/): Unisys WebPerfect Image Suite 3.0 NTLMv2 Hash Leakage via .NET Remoting (high 7.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-39907 and fix it if it is affected.

What it is: CVE-2026-39907 is a high-severity server-side request forgery vulnerability in Unisys WebPerfect Image Suite, published on 14 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-39907 in the wild and no public exploit code.

Affected product: Unisys WebPerfect Image Suite. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-39907/ (Markdown: https://insights.sbomify.com/CVE-2026-39907/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-39907
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-39907
- OSV: https://osv.dev/vulnerability/CVE-2026-39907

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-39907/
Summaries are generated and may contain mistakes; the official description above is the record.