---
id: CVE-2026-109950
title: >-
  FreeRDP from 3.0.0 before 3.32.0 contains a heap out-of-bounds read
  vulnerability that allows a malicious RD Gateway to crash clients by sending
  mismatched message lengths
summary: >-
  FreeRDP from 3.0.0 before 3.32.0 contains a heap out-of-bounds read
  vulnerability that allows a malicious RD Gateway to crash clients by sending
  mismatched message lengths. Attackers controlling the gateway can set MsgBytes
  far larger th…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'
cwe:
  - CWE-125
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T14:17:33.563'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109950'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-xf45-j844-588v'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-heap-out-of-bounds-read-via-rd-gateway-messages
    label: disclosure@vulncheck.com
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-xf45-j844-588v'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
ingestedAt: '2026-10-13T14:29:01.853Z'
---

## Overview

FreeRDP from 3.0.0 before 3.32.0 contains a heap out-of-bounds read vulnerability that allows a malicious RD Gateway to crash clients by sending mismatched message lengths. Attackers controlling the gateway can set MsgBytes far larger than the NDR string ActualCount in consent or service messages, causing UTF-8 conversion to read past the stream allocation and disrupt client availability.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.