CVE-2026-109951GHSA-g4wg-67xq-8q53
FreeRDP 3.17.1 before 3.32.0 Heap Buffer Over-Read via Proxy DRDYNVC Channel Name
FreeRDP FreeRDP
CVSS
6.9MediumExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 18 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.31%Chance of exploitation activity in the next 30 days, higher than 23% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 3.32.0FreeRDPCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
FreeRDP 3.17.1 before 3.32.0 contains a heap buffer over-read vulnerability in DynvcTrackerHandleCreateBack of the freerdp-proxy DRDYNVC channel handler that allows malicious backend RDP servers to read heap memory out of bounds. Attackers can send a CREATE_REQUEST_PDU whose channel name lacks a NUL byte, causing an unbounded snprintf read that leaks memory into proxy logs or crashes the process.
Text from CVE List
Affected versions 2
- FreeRDPaffected: 3.17.1 before 3.32.0CVE List
- FreeRDPunaffected: 3.32.0CVE List