CVE-2026-111373GHSA-83g2-gf92-5c4g
FreeRDP before 3.32.0 NULL Dereference via Zero-Length WebSocket Ping
FreeRDP FreeRDP
CVSS
6.9MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.28%Chance of exploitation activity in the next 30 days, higher than 19% 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 before 3.32.0 contains a NULL pointer dereference vulnerability in the websocket transport that allows a malicious gateway to crash clients by sending zero-length pings. When the payload length is zero, websocket_reply_pong passes a nullptr stream to websocket_reply_close, triggering an assertion failure that terminates the client process and causes denial of service.
Text from CVE List
Affected versions 2
- FreeRDPaffected: all versions before 3.32.0CVE List
- FreeRDPunaffected: 3.32.0CVE List