---
id: CVE-2026-121392
title: >-
  FreeRDP before 3.32.2 Certificate Identity Validation Bypass via
  tls_verify_certificate
summary: >-
  FreeRDP before 3.32.2 contains an improper certificate validation
  vulnerability in tls_verify_certificate() that accepts Common Name fallback
  despite non-matching SAN entries and matches IP literals against DNS strings.
  Man-in-the-middle…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-295
vendor: FreeRDP
product: FreeRDP
affected:
  - FreeRDP < 3.32.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-03T17:48:51.108013Z'
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T18:31:19.966Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121392'
references:
  - url: 'https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-jq25-3374-4262'
    label: GitHub Security Advisory (GHSA-jq25-3374-4262)
  - url: >-
      https://www.vulncheck.com/advisories/freerdp-before-3.32.2-certificate-identity-validation-bypass-via-tls-verify-certificate
    label: >-
      VulnCheck Advisory: FreeRDP before 3.32.2 Certificate Identity Validation
      Bypass via tls_verify_certificate
tags:
  - cve.org
epss: 0.00167
epssPercentile: 0.0598
ingestedAt: '2026-11-05T20:33:06.361Z'
---

## Overview

FreeRDP before 3.32.2 contains an improper certificate validation vulnerability in tls_verify_certificate() that accepts Common Name fallback despite non-matching SAN entries and matches IP literals against DNS strings. Man-in-the-middle attackers holding a certificate from a client-trusted CA can bypass server identity checks to intercept RDP sessions, including keystrokes, clipboard, and screen content.

## Affected

- `FreeRDP < 3.32.2`

## Remediation

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