Vulnerability in 4real ThemisNETPanel software

CERT Polska has received a report about vulnerability in 4real ThemisNETPanel software and participated in coordination of its disclosure.

The vulnerabilityCVE-2026-6847: Remote Code Execution vulnerability exists in ThemisNETPanel due to missing authentication for a critical file upload function. The application exposes an endpoint that allows unauthenticated attackers to upload arbitrary PHP files by providing a base64-encoded payload and to execute arbitrary code on the underlying server. This issue has been fixed by a patch released in April 2026.

We thank Kamil Szczurowski and Robert Kruczek for the responsible vulnerability report.