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CVE

CVE-2026-67305

FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr
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CVE

CVE-2026-67305

FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr

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

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.4
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67305.json, https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cj9v-h4hq-29jr, https://nvd.nist.gov/vuln/detail/CVE-2026-67305, https://www.vulncheck.com/advisories/freerdp-windows-client-before-heap-buffer-overflow-via-cliprdr

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00546%
EPSS Percentile
0.44136%
Introduced Version
0
Fix Available
743f437f434c6814d3ba265c75cab14673bc2911

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