Critical 9.4Published Aug 1, 2026

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

Updated under an hour ago (Oct 27, 2026, 4:23 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for FreeRDP

Exploited in the last 30 days

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.

CVSS: 9.4 CRITICAL (v4.0, CNA)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
Weakness (CWE): CWE-122
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

FreeRDP FreeRDP freerdp:freerdp (from the name)	before 3.29.0; 3.29.0 not affected	CNA record
freerdp freerdp freerdp:freerdp	before 3.29.0	NVD

References

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cj9v-h4hq-29jr	vendor-advisory, exploit
https://www.vulncheck.com/advisories/freerdp-windows-client-before-heap-buffer-overflow-via-cliprdr	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.