CVE-2026-109245

HIGH
MEDIUM Priority: 0.02 BB Relevance: 65/100
Published: 2026-10-12 Modified: 2026-11-02 First seen: 2026-11-02 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Active
S: X
AT: Present
VC: High
VI: High
VA: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
freerdp freerdp 3.0.0 – 3.32.0

Bug Bounty Relevance

65 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

7.4 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.23%
Raw Score 0.002340
Percentile 14.4%
Date 2026-11-05

EPSS Trend

2026-11-05
0.00234
2026-11-04
0.00234
2026-11-03
0.00234
2026-11-02
0.00236

Intelligence Sources

nvd ref →