Vulnerability in FreeRDP

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

FreeRDP from 3.27.0 before 3.32.2 contains a denial of service vulnerability in rdpdr_dump_packet that allows malicious RDP servers to abort clients by sending malformed RDPDR device-list announcements. Attackers can declare a DeviceDataLength exceeding the received packet, triggering a fatal Stream_Seek assertion when device redirection, TRACE logging, and WinPR assertions are enabled.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund18 Oct 2026WID-SEC-2026-4015

  FreeRDP: Multiple vulnerabilities allow denial of service Translated from German

  Risk lowCVE-2026-121389CVE-2026-121411CVE-2026-121403+1 more CVEs

[ References ]References

• github.com/FreeRDP/FreeRDP/security/advisories/GHSA-66mr-7wc7-23vcVendor Advisory
• www.vulncheck.com/advisories/freerdp-3.27.0-before-3.32.2-client-dos-via-rdpdr-device-a…Third Party Advisory