Vulnerability in FreeRDP

[ Why it matters ]Priority signals

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

[ Description ]Official description

FreeRDP before 3.32.2 contains a denial of service vulnerability where rdg_process_packet dispatches a PKT_TYPE_EXTENDED_AUTH_MSG without verifying negotiated mode or auth context. A malicious or compromised RD Gateway can send the extended-auth packet before tunnel authentication, triggering a null-pointer dereference that crashes the client.

[ 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-Bund19 Oct 2026WID-SEC-2026-4039

  FreeRDP: Multiple vulnerabilities Translated from German

  Risk mediumCVE-2026-121412CVE-2026-121407CVE-2026-121400+20 more CVEs

[ References ]References

• github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8rjm-m7xg-mg6mVendor Advisory
• www.vulncheck.com/advisories/freerdp-before-3.32.2-denial-of-service-via-rd-gateway-ext…Third Party Advisory