---
id: CVE-2026-121388
title: FreeRDP 3.0.0 before 3.32.2 Uncapped Memory Allocation via DRDYNVC DATA_FIRST
summary: >-
  FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation
  vulnerability that allows malicious RDP servers to force large client
  allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare
  lengths up…
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'
cvssSource: cna
cwe:
  - CWE-770
vendor: FreeRDP
product: FreeRDP
affected:
  - FreeRDP >= 3.0.0 < 3.32.2
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-11-03T22:37:04.409438Z'
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T22:41:38.002Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121388'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rrp5-666j-g6gp'
    label: GitHub Security Advisory (GHSA-rrp5-666j-g6gp)
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-uncapped-memory-allocation-via-drdynvc-data-first
    label: >-
      VulnCheck Advisory: FreeRDP 3.0.0 before 3.32.2 Uncapped Memory Allocation
      via DRDYNVC DATA_FIRST
tags:
  - cve.org
epss: 0.0031
epssPercentile: 0.24033
ingestedAt: '2026-11-05T20:33:06.606Z'
---

## Overview

FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up to 4,294,967,295 bytes on running dynamic channels, causing StreamPool_Take to reserve memory before body validation and exhaust client memory.

## Affected

- `FreeRDP >= 3.0.0 < 3.32.2`

## Remediation

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