Out-of-bounds Write Affecting freerdp-libs package, versions <2:3.10.3-12.el10_2.6


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.78% (54th percentile)

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  • Snyk IDSNYK-ROCKY10-FREERDPLIBS-17900115
  • published9 Jul 2026
  • disclosed29 May 2026

Introduced: 29 May 2026

CVE-2026-45700  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 freerdp-libs to version 2:3.10.3-12.el10_2.6 or higher.
This issue was patched in RLSA-2026:36203.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-libs package and not the freerdp-libs package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1