Is CVE-2026-65939 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-65939 being exploited in the wild.

How severe is CVE-2026-65939?

Medium severity, with a CVSS score of 6.8, published 12 August 2026.

Which products and versions are affected?

Progress WhatsUp Gold before 2026.0.2.

Is there a fix for CVE-2026-65939?

A patch was published on 2026-08-12: Fixed in version 2026.0.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-65939 attacked?

It is attacked over the network.

Am I affected by CVE-2026-65939?

Check whether you run Progress WhatsUp Gold at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-65939: Progress WhatsUp Gold arbitrary file extension in LogToFile

CVE-2026-65939 · Severity: medium · CVSS 6.8 · Published 2026-08-12

WhatsUp Gold is a network monitoring and management platform used to track IT infrastructure health and performance. A privileged attacker can exploit a flaw in the LogToFile action feature to create files with arbitrary extensions in the IIS web root directory, potentially enabling code execution or data exposure on the monitoring server.

Technologies: Progress WhatsUp Gold. Vendors: Progress.

Quick answers

Is CVE-2026-65939 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-65939 being exploited in the wild.
How severe is CVE-2026-65939?: Medium severity, with a CVSS score of 6.8, published 12 August 2026.
Which products and versions are affected?: Progress WhatsUp Gold before 2026.0.2.
Is there a fix for CVE-2026-65939?: A patch was published on 2026-08-12: Fixed in version 2026.0.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-65939 attacked?: It is attacked over the network.
Am I affected by CVE-2026-65939?: Check whether you run Progress WhatsUp Gold at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability exists in the LogToFile action creation mechanism in WhatsUp Gold versions prior to 2026.0.2. A privileged (authenticated) attacker can specify an arbitrary file extension when creating a LogToFile action, allowing files to be written to locations within the IIS web root without proper validation. This could permit an attacker to write executable files (e.g., .aspx, .asp) or other web-accessible content that could be accessed via HTTP. The attack requires prior authentication/elevated privileges within WhatsUp Gold. Patches are available in version 2026.0.2 and later.

Affected products

Progress WhatsUp Gold before 2026.0.2

Timeline

2026-08-12: disclosed
2026-08-12: patched: Fixed in version 2026.0.2

References

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