CVE-2026-121388

Medium

Description

FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up to 4,294,967,295 bytes on running dynamic channels, causing StreamPool_Take to reserve memory before body validation and exhaust client memory.

SeverityMedium

CVSS6.5

Exploit probability—

ProductFreerdp

PublishedNov 3, 2026

First seenNov 4, 2026

Weakness typeCWE-770Allocation of resources without limits

How to fix

Update

freerdp freerdp3.32.2 or later

Vendor advisories

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rrp5-666j-g6gp

Affected products

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

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