Out-of-bounds Write Affecting freerdp package, versions <2:3.10.3-5.el10_1.2


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.09% (25th percentile)

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  • Snyk IDSNYK-CENTOS10-FREERDP-14965326
  • published16 Jan 2026
  • disclosed14 Jan 2026

Introduced: 14 Jan 2026

CVE-2026-22858  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Centos:10 freerdp to version 2:3.10.3-5.el10_1.2 or higher.

NVD Description

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

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, global-buffer-overflow was observed in FreeRDP's Base64 decoding path. The root cause appears to be implementation-defined char signedness: on Arm/AArch64 builds, plain char is treated as unsigned, so the guard c <= 0 can be optimized into a simple c != 0 check. As a result, non-ASCII bytes (e.g., 0x80-0xFF) may bypass the intended range restriction and be used as an index into a global lookup table, causing out-of-bounds access. This vulnerability is fixed in 3.20.1.

CVSS Base Scores

version 3.1