---
id: CVE-2026-109943
title: >-
  FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's
  async-update message proxy, which shallow-copies the parser-owned PolygonSC or
  PolygonCB points array when numPoints is zero, so both the queue consumer and
  parser clean…
summary: >-
  FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's
  async-update message proxy, which shallow-copies the parser-owned PolygonSC or
  PolygonCB points array when numPoints is zero, so both the queue consumer and
  parser clean…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-415
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T14:17:32.377'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109943'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pg3f-chj4-mrw6'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-3.29.0-before-3.32.0-double-free-via-async-update-polygon-order
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-13T14:29:01.850Z'
---

## Overview

FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's async-update message proxy, which shallow-copies the parser-owned PolygonSC or PolygonCB points array when numPoints is zero, so both the queue consumer and parser cleanup free it. A malicious RDP server can send a point-bearing polygon order followed by a zero-point order to crash a client with +async-update enabled.

## Remediation

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