CVE-2026-45700

HIGH 8.8

Heap-buffer-overflow write in planar bitmap decoder

CVSS Score

8.8

EPSS Score

0.5%

EPSS Percentile

40th

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdp_bitmap_decompress_planar() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planar_decompress_plane_rle() to write past the end of pTempData. This vulnerability is fixed in 3.26.0.

CWE	CWE-787
Vendor	freerdp
Product	freerdp
Published	May 29, 2026
Last Updated	Jul 29, 2026

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Affected Versions

FreeRDP / FreeRDP

< 3.26.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗