[ CVE-2026-121399 · 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 contains a memory allocation vulnerability in rdg_receive_packet that allows a malicious RD Gateway to force a 2 GiB client allocation before tunnel authentication. Attackers can send an eight-byte RDG header declaring packet length 0x7FFFFFFF to trigger pre-authentication memory exhaustion and denial of service.

[ 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-4vh4-3pc3-32p7Vendor Advisory
www.vulncheck.com/advisories/freerdp-before-3.32.2-memory-exhaustion-via-rd-gateway-pac…Third Party Advisory

[ Description ]Official description

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

FreeRDP: Multiple vulnerabilities Translated from German

[ References ]References