Cloudanix VulnDB

CVE-2026-33984

High · 7.5

CVSS

7.5

EPSS

0.7%

Published

Mar 30, 2026

CISA due date

—

The record

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.

Affected packages

Ecosystem Package Introduced Fixed
openSUSE:Tumbleweed freerdp 0 3.24.2-1.1

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