---
id: "CVE-2026-121389"
kind: "vulnerability"
aliases: ["CVE-2026-121389"]
title: "FreeRDP: malformed device-list packet from a server aborts the client"
severity: "low"
cvss: 3.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["freerdp", "package", "rdp-clients", "remote-desktop"]
not_affected_if: ["default-config", "trusted-servers-only", "versions-before-3.27.0"]
published_at: "2026-11-03T15:17:26+00:00"
first_seen_at: "2026-11-03T15:21:57+00:00"
updated_at: "2026-11-03T15:24:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121389", "first_seen_at": "2026-11-03T15:21:57+00:00"}]
---

# FreeRDP: malformed device-list packet from a server aborts the client

FreeRDP, a remote desktop client library, crashes when a malicious RDP server sends a malformed device-list announcement with a declared length larger than the packet. An attacker gets a denial of service that aborts the client, with no code execution stated in the sources.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the FreeRDP version in use: `xfreerdp --version` or the package manager's version for `freerdp`
- Confirm whether device redirection (RDPDR) is enabled in the client configuration
- Confirm whether the build has WinPR assertions and TRACE logging enabled, which the sources say are required

## Fix

- Move to FreeRDP `3.32.2` or later, the first fixed version stated by the sources

## Timeline

- 2026-11-03T15:21:57+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121389

## Documents

- [advisory] Vendor advisory: github.com https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-66mr-7wc7-23vc
- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/freerdp-3.27.0-before-3.32.2-client-dos-via-rdpdr-device-announcement-logging

## From the sources

FreeRDP from 3.27.0 before 3.32.2 contains a denial of service vulnerability in rdpdr_dump_packet that allows malicious RDP servers to abort clients by sending malformed RDPDR device-list announcements. Attackers can declare a DeviceDataLength exceeding the received packet, triggering a fatal Stream_Seek assertion when device redirection, TRACE logging, and WinPR assertions are enabled.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_