[ CVE-2026-121406 · Published 3 Nov 2026 ]

Vulnerability in FreeRDP

CVSS 4.3 EPSS <1%1 agency advisoryNo fix listed yet

[ Description ]Official description

FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received rejects only negative zgfx_decompress status and passes the resulting null output pointer to Stream_StaticConstInit. A malicious RDP server can send a zero-output ZGFX payload on the RDPGFX channel after session activation to terminate 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-2c9x-4gr7-hrwxVendor Advisory
www.vulncheck.com/advisories/freerdp-before-3.32.2-client-denial-of-service-via-zero-ou…Third Party Advisory

[ Description ]Official description

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

FreeRDP: Multiple vulnerabilities Translated from German

[ References ]References