CVE-2026-83646 MEDIUM

CVE-2026-83646: Active Directory Federation Services (AD FS) Spoofing Vulnerability

Vendor Microsoft
Product Windows 10 Version 1607
Weakness CWE-601 · Open redirect
Published October 13, 2026
Last update October 26, 2026
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C

What the vulnerability does

01Description

Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.

Key dates

02Disclosure timeline

October 13, 2026 CVE published
October 26, 2026 Record updated