ROBERT KRUCZEK
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CVE-2026-6847

CWE-306 Missing Authentication for Critical Function
CVSS v4.0: 9.3 (CRITICAL) Published: July 13, 2026 View on NVD →

Description

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.

Affected Products

Vendor Product Versions Affected
4real ThemisNETPanel 0 (< 04.2026) (affected)

CVSS Score & Vector

Base Score: 9.3 (CRITICAL)
Vector (v4.0):
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Credits / Discoverer

  • Kamil Szczurowski
  • Robert Kruczek

References & Advisories