Exposure of Private Information ('Privacy Violation') in Microsoft Windows and Windows Server - CVE-2026-85916
Published: October 14, 2026
Vulnerability identifier: #VU155237
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-85916
CWE-ID: CWE-359
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information locally.
The vulnerability exists due to exposure of private personal information to unauthorized actors in Azure Active Directory when handling work account sign-in access tokens. A remote attacker can access an exposed sign-in access token for a user's work account to disclose sensitive information locally.
Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2026-85916
Install security update from vendor's website.
Microsoft Windows - addressed in versions 11 23H2 10.0.22631.7652, 11 24H2 10.0.26100.9711, 11 25H2 10.0.26200.9711, 11 26H1 10.0.28000.3231
Windows Server - update to 2025 10.0.26100.33650
Windows Server - update to 2025 10.0.26100.33650