CVE-2026-85324 HIGH

CVE-2026-85324: Active Directory Federation Services (AD FS) Denial of Service Vulnerability

Vendor Microsoft
Product Windows 10 Version 1607
Weakness CWE-789
Published October 13, 2026
Last update October 26, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Memory allocation with excessive size value in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.

Key dates

02Disclosure timeline

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