CVE-2026-33984 in FreeRDP

Résumé (Anglaise)

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.24.2, in resize_vbar_entry() in libfreerdp/codec/clear.c, vBarEntry->size is updated to vBarEntry->count before the winpr_aligned_recalloc() call. If realloc fails, size is inflated while pixels still points to the old, smaller buffer. On a subsequent call where count <= size (the inflated value), realloc is skipped. The caller then writes count * bpp bytes of attacker-controlled pixel data into the undersized buffer, causing a heap buffer overflow. This issue has been patched in version 3.24.2.

Responsable

GitHub_M

Réserver

24/03/2026

Divulgation

31/03/2026

Entrées

VulDB provides additional information and datapoints for this CVE:

ID	Vulnérabilité	CWE	Exp	Con	CVE
354275	FreeRDP clear.c resize_vbar_entry buffer overflow	122	Non défini	Correctif officiel	CVE-2026-33984