CVE-2026-121409

The record

FreeRDP before 3.32.2 contains a denial of service vulnerability that allows malicious servers or unauthenticated peers to abort clients or proxies via oversized X.224 routing tokens. Attackers can send an oversized LoadBalanceInfo in a Server Redirection PDU, or a 240–247 byte token to a FixedTarget freerdp-proxy, triggering a tpdu_write_header assertion that crashes the process.

Affected packages

Related vulnerabilities

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• CVE-2026-121406 FreeRDP before 3.32.2 allows a client assertion abort because rdpgfx_on_data_received… CWE-617
• CVE-2026-121396 FreeRDP clients from 3.0.0 before 3.32.2 built with verbose WinPR assertions contain a… CWE-617
• CVE-2026-121395 FreeRDP from 3.17.0 before 3.32.2 contains an assertion failure in the RemoteFX… CWE-617
• CVE-2026-121394 FreeRDP from 3.11.0 before 3.32.2 contains an assertion failure in the RemoteFX RLGR… CWE-617
• CVE-2026-121389 FreeRDP from 3.27.0 before 3.32.2 contains a denial of service vulnerability in… CWE-617
• CVE-2026-121390 FreeRDP 3.0.0 before 3.32.2 built with WITH_AAD=ON contains a reachable assertion because… CWE-617
• CVE-2026-121393 FreeRDP from 3.0.0 before 3.32.2 contains a denial of service vulnerability that allows… CWE-617