[ CVE-2026-121395 · Published 3 Nov 2026 ]

Vulnerability in FreeRDP

CVSS 6.5 EPSS <1%1 agency advisoryNo fix listed yet

[ Description ]Official description

FreeRDP from 3.17.0 before 3.32.2 contains an assertion failure in the RemoteFX differential decoder when verbose WinPR assertions are enabled. A malicious RDP server can send a crafted RemoteFX tile with adjacent LL3 coefficients summing beyond signed 16-bit range to abort the client process.

[ 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-cg4f-57hc-v7w7Vendor Advisory
www.vulncheck.com/advisories/freerdp-3.17.0-before-3.32.2-denial-of-service-via-remotef…Third Party Advisory

[ Description ]Official description

[ Fixes ]Fixes and patches

[ Advisories ]Government CERT advisories

FreeRDP: Multiple vulnerabilities Translated from German

[ References ]References