CVE-2026-67305
9.4
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| FreeRDP | FreeRDP | 0 < 3.29.0 | affected |
| FreeRDP | FreeRDP | 3.29.0 | unaffected |
Weaknesses
- CWE-122: Heap-based Buffer Overflow
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cj9v-h4hq-29jr
- https://www.vulncheck.com/advisories/freerdp-windows-client-before-heap-buffer-overflow-via-cliprdr
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