---
title: "CVE-2026-67289\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-67289?format=md
keywords: index, follow
---

# CVE-2026-67289

Publication date 1 August 2026

Last updated 7 August 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**9.8 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2026-67289?format=md#impact-score)

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## Description

FreeRDP before 3.29.0 (affected versions <= 3.28.0) does not validate CRLF
and control characters in the server-controlled RDP redirection
TargetNetAddress field. This value is copied into the client's
ServerHostname and, when the client connects through an HTTP proxy, is
written directly into the proxy CONNECT request line and Host header by
http\_proxy\_connect() without filtering. A malicious or compromised RDP
server can send a crafted redirection PDU containing embedded control
characters to inject arbitrary headers/requests into the HTTP proxy CONNECT
request.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| freerdp | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Not in release |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |
| freerdp2 | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| freerdp3 | 26.04 LTS resolute | Fixed 3.30.0+dfsg-0ubuntu0.26.04.1 |
| 24.04 LTS noble | Fixed 3.30.0+dfsg-0ubuntu0.24.04.1 |
| 22.04 LTS jammy | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:

CVSS v4.0

[CVSS v4.0](https://ubuntu.com/security/CVE-2026-67289?format=md)
[CVSS v3.0](https://ubuntu.com/security/CVE-2026-67289?format=md)

**Base score**

9.3 · Critical

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Attack requirements | None |
  | Privileges required | None |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | High |
  | Vulnerable system - Integrity impact | High |
  | Vulnerable system - Availability impact | High |
  | Subsequent system - Confidentiality impact | None |
  | Subsequent system - Integrity impact | None |
  | Subsequent system - Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.3 · Critical |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-67289)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-67289)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-67289)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-67289)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-67289>
* <https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mwwh-mhp9-q7vm>
* <https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319f>
* <https://www.vulncheck.com/advisories/freerdp-before-http-proxy-request-injection-via-redirection>