CVE-2026-121951

High

Description

FreeRDP 3.0.0 before 3.32.2 server-side RDP peer input parsing skips the six-byte body of a slow-path input event with an unknown message type without checking it lies within the packet's declared length, causing a WinPR stream assertion failure. A remote RDP client with an active session can send a truncated unknown input event to abort assertion-enabled server processes, causing denial of service.

SeverityHigh

CVSS7.5

Exploit probability—

ProductFreeRDP

PublishedNov 4, 2026

First seenNov 4, 2026

Weakness typeCWE-617CWE-617

How to fix

Update

FreeRDP FreeRDP3.32.2 or later
freerdp freerdp3.32.2 or later

Vendor advisories

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4qq4-qwxq-49m8

Affected products

Product	Affected versions	Fixed in
FreeRDP FreeRDP	3.0.0 ≤ v	3.32.2
freerdp freerdp	3.0.0 ≤ v < 3.32.2	3.32.2

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