VULNERABILITY INTELLIGENCE

CVE-2026-45700

CVSS score9.8 CRITICAL
EPSS probability6.10%
CISA KEVNot currently listed
Published2026-05-29
Last modified2026-07-29
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • security-advisories@github.com: CWE-787
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-787

Primary references