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CVE-2026-40033

8.8 HIGH

FreeRDP before 3.26.0 contains a heap-buffer-overflow vulnerability in gdi_CacheToSurface that allows remote attackers to write out-of-bo...

Published: 2026-05-26 · Last updated: 2026-05-27

Severity and scoring

CVSS
8.8 HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-122

Affected products

VendorProduct
freerdpfreerdp

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.

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-45700 — FreeRDP is a free implementation of the Remote Desktop Protocol (9.8 CRITICAL)
  • CVE-2026-44422 — FreeRDP is a free implementation of the Remote Desktop Protocol (7.5 HIGH)
  • CVE-2026-44421 — FreeRDP is a free implementation of the Remote Desktop Protocol (8.8 HIGH)
  • CVE-2026-44420 — FreeRDP is a free implementation of the Remote Desktop Protocol (8.8 HIGH)

Same CWE

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  • CVE-2026-46692 — ImageMagick is free and open-source software used for editing and manipulating digital images (4.1 MEDIUM)
  • CVE-2026-46520 — ImageMagick is free and open-source software used for editing and manipulating digital images (7.5 HIGH)
  • CVE-2026-2049 — GIMP HDR File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability (7.8 HIGH)