CVE-2026-109245

MEDIUMCVSS 6.8

Description

FreeRDP 3.0.0 before 3.32.0 contains an improper certificate validation vulnerability in freerdp_http_request() in libfreerdp/utils/http.c that completes TLS handshakes without verifying the server certificate chain. On-path attackers can impersonate login.microsoftonline.com in the Azure AD authentication flow to capture OAuth authorization codes and substitute the OpenID discovery document.

Timeline

Published:October 12th, 2026 5:17 PM

Last modified:October 14th, 2026 8:11 PM

CVSS Scoring

CVSS v3: 6.8 (MEDIUM)

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Weaknesses (CWE)

CWE-295

References & Reports

Advisories, patches, and third-party reports

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h44v-39x6-9xvg
https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-improper-certificate-validation-in-freerdp-http-request
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h44v-39x6-9xvg

Source: NIST NVD · Data may lag official sources by up to one minute