CVE-2026-67305: FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr

Published Aug 1, 2026
·
Updated

FreeRDP Windows client before 3.29.0 contains a heap buffer overflow vulnerability in the clipboard virtual channel when processing CLIPRDRFILECONTENTSRESPONSE 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.

Affected Software

1 affected component
FreeRDP FreeRDP Windows Client<3.29.0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade FreeRDP Windows Client to a version that resolves this vulnerability.

    Fixed in 3.29.0

Event History

Aug 1, 2026
CVE Published
via MITRE·12:22 PM
Data Sourced
via MITRE·12:22 PM
DescriptionWeakness
Data Sourced
via NVD·01:17 PM
DescriptionSeverityWeakness
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