---
id: CVE-2026-109255
title: >-
  FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in
  license_check_stream_length that allows a malicious RDP server to trigger a
  heap buffer overflow on 32-bit clients
summary: >-
  FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in
  license_check_stream_length that allows a malicious RDP server to trigger a
  heap buffer overflow on 32-bit clients. Attackers can send a crafted
  SERVER_LICENSE_R…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:H'
cwe:
  - CWE-122
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:16.987'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109255'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-hxw3-57rq-3v4m'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-heap-buffer-overflow-via-license-check-stream-length
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.178Z'
---

## Overview

FreeRDP 3.0.0 before 3.32.0 contains an integer truncation vulnerability in license_check_stream_length that allows a malicious RDP server to trigger a heap buffer overflow on 32-bit clients. Attackers can send a crafted SERVER_LICENSE_REQUEST with a large scopeCount that bypasses length checks, causing out-of-bounds writes leading to denial of service or remote code execution.

## Remediation

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