cvedb.io
CVE-2026-40033
HIGH · CVSS 8.8
EPSS exploitation probability: 0%
Published 2026-05-26T15:16:34.480 · Last modified 2026-06-30T03:19:15.260

Summary

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.

Affected products

freerdp — freerdp

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.