๐Ÿ›ก๏ธ CVE-2026-40033
๐ŸŸ  CVSS 8.8 โ€” High โš ๏ธ Exploit Public CWE-122 NVD
8.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

FreeRDP before 3.26.0 contains a heap-buffer-overflow vulnerability in gdi_CacheToSurface that allows remote attackers to write out-of-bounds heap memory. The vulnerability occurs because rectangle validation clamps coordinates to UINT16_MAX but performs copy operations using unclamped cache entry dimensions, enabling malicious RDP servers to trigger large out-of-bounds writes and potentially achieve remote code execution or client crash.

Details

Severity HIGH
CVSS Score 8.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-122
Public Exploit โš ๏ธ Yes
Source NVD
Published 2026-05-26
Updated 2026-06-02
Modified 2026-05-27

Affected Packages

Software From version Fixed in
freerdp โ€” 3.26.0
unknown โ€” โ€”

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