Out-of-bounds Write Affecting freerdp package, versions <2:3.6.3-1.amzn2023.0.8


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (17th percentile)

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  • Snyk IDSNYK-AMZN2023-FREERDP-15922228
  • published7 Apr 2026
  • disclosed13 Mar 2026

Introduced: 13 Mar 2026

CVE-2026-29775  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 freerdp to version 2:3.6.3-1.amzn2023.0.8 or higher.
This issue was patched in ALAS2023-2026-1520.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp package and not the freerdp package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap out-of-bounds read/write occurs in FreeRDP's bitmap cache subsystem due to an off-by-one boundary check in bitmap_cache_put. A malicious server can send a CACHE_BITMAP_ORDER (Rev1) with cacheId equal to maxCells, bypassing the guard and accessing cells[] one element past the allocated array. This vulnerability is fixed in 3.24.0.

CVSS Base Scores

version 3.1