---
id: CVE-2026-121399
title: FreeRDP before 3.32.2 Memory Exhaustion via RD Gateway Packet Length
summary: >-
  FreeRDP before 3.32.2 contains a memory allocation vulnerability in
  rdg_receive_packet that allows a malicious RD Gateway to force a 2 GiB client
  allocation before tunnel authentication. Attackers can send an eight-byte RDG
  header declar…
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'
cvssSource: cna
cwe:
  - CWE-770
vendor: FreeRDP
product: FreeRDP
affected:
  - FreeRDP < 3.32.2
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T14:28:02.598Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121399'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4vh4-3pc3-32p7'
    label: GitHub Security Advisory (GHSA-4vh4-3pc3-32p7)
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-before-3.32.2-memory-exhaustion-via-rd-gateway-packet-length
    label: >-
      VulnCheck Advisory: FreeRDP before 3.32.2 Memory Exhaustion via RD Gateway
      Packet Length
tags:
  - cve.org
epss: 0.00269
epssPercentile: 0.19139
ingestedAt: '2026-11-05T19:30:42.962Z'
---

## Overview

FreeRDP before 3.32.2 contains a memory allocation vulnerability in rdg_receive_packet that allows a malicious RD Gateway to force a 2 GiB client allocation before tunnel authentication. Attackers can send an eight-byte RDG header declaring packet length 0x7FFFFFFF to trigger pre-authentication memory exhaustion and denial of service.

## Affected

- `FreeRDP < 3.32.2`

## Remediation

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