CVE-2026-121954

Medium

Description

FreeRDP before 3.32.2 has a heap out-of-bounds write in the planar codec because freerdp_bitmap_planar_context_reset commits new dimensions before buffer reallocation succeeds, and a failed ResetGraphics is only logged. A malicious RDP server can send an oversized ResetGraphics PDU, then a GFX PLANAR command, to corrupt client heap memory and crash the client.

SeverityMedium

CVSS6.5

Exploit probability—

ProductFreeRDP

PublishedNov 4, 2026

First seenNov 4, 2026

Weakness typeCWE-787Out-of-bounds write

How to fix

Update

FreeRDP3.32.2 or later
freerdp freerdp3.32.2 or later

Vendor advisories

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fg78-v8j5-8697

Affected products

Product	Affected versions	Fixed in
FreeRDP	No range specified	3.32.2
freerdp freerdp	v < 3.32.2	3.32.2

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