CVE-2026-67305

CriticalCVSS 9.4

Published: 01/08/2026(UTC)Translated: 01/08/2026(UTC)NVD NIST

Summary

FreeRDP Windows client before version 3.29.0 contains a heap buffer overflow vulnerability in the clipboard virtual channel when processing CLIPRDR_FILE_CONTENTS_RESPONSE PDUs without validating the server-provided size against the destination buffer. A malicious RDP server can send a response with a data payload significantly larger than requested, causing arbitrary heap memory corruption that may enable remote code execution when a user performs a paste operation.

Risk Assessment

The risk is remote code execution by a malicious RDP server, potentially leading to client compromise.

Recommendation

Upgrade FreeRDP to version 3.29.0 or later.

Original NVD description (English source)

FreeRDP Windows client before 3.29.0 contains a heap buffer overflow vulnerability in the clipboard virtual channel when processing CLIPRDR_FILE_CONTENTS_RESPONSE PDUs without validating the server-provided size against the destination buffer. A malicious RDP server can send a response with a data payload significantly larger than requested, causing arbitrary heap memory corruption that may enable remote code execution when a user performs a paste operation.