---
title: "CVE-2026-67293\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-2026-67293?format=md
keywords: index, follow
---

# CVE-2026-67293

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

**4.2 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2026-67293?format=md#impact-score)

Toggle side navigation

## Description

FreeRDP before 3.29.0 (affected versions <= 3.28.0) contains an improper
certificate hostname validation vulnerability. The TLS hostname matcher
(tls\_match\_hostname() in libfreerdp/crypto/tls.c) treats a wildcard pattern
such as \*.example.com as matching any hostname ending in .example.com, so
it incorrectly accepts a wildcard certificate for multi-label subdomains
like a.b.example.com (which OpenSSL's X509\_check\_host() rejects). This
weakens TLS server authentication under wildcard-certificate conditions.

## 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-2026-67293?format=md)
[CVSS v3.0](https://ubuntu.com/security/CVE-2026-67293?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-2026-67293)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-67293)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-67293)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-67293)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-67293>
* <https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-5wr6-8m8j-3h7f>
* <https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319f>
* <https://www.vulncheck.com/advisories/freerdp-before-improper-certificate-hostname-validation>