CVE-2026-67305

9.4 criticalEPSS 0.8%

Critical (9.4) in freerdp freerdp. EPSS 0.8% chance of exploitation in the next 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.

Severity

CVSS 4.0

9.4 critical

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

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 0.8% chance of exploitation in the next 30 days; higher than 55% of CVEs (scores of 2026-10-31)
CWE: CWE-122
Published: 2026-08-01
Modified: 2026-09-08
Record from: the NVD, synced 2026-10-19

Affected

freerdp:freerdp

References

Check your stack JSON