CVE-2026-62832: Windows User Profile Service Elevation of Privilege Vulnerability

Overview

Severity: High (CVSS 7.8)
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category: Elevation of Privilege
Exploit Status: Not Exploited
Exploitation Likelihood: More Likely
Publicly Disclosed: Yes
Patch Tuesday: 2026-Aug
Released: 2026-08-11

Description

Improper link resolution before file access ('link following') in Windows User Profile Service allows an authorized attacker to elevate privileges locally.

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain ADMINISTRATOR privileges. How could an attacker exploit this vulnerability? An authenticated attacker who has credentials for another local account could run a specially crafted application to load another user's registry hive. Successful exploitation could allow the attacker to access or modify another user's data and gain administrator privileges. User interaction is not required.

Affected Products (18)

Windows

Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for x64-based Systems
Windows Server 2025 (Server Core installation)
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems
Windows 11 Version 23H2 for ARM64-based Systems
Windows 11 Version 23H2 for x64-based Systems
Windows 11 Version 24H2 for ARM64-based Systems
Windows 11 Version 24H2 for x64-based Systems
Windows Server 2025
Windows 11 version 26H1 for x64-based Systems
Windows 11 Version 26H1 for ARM64-based Systems

ESU

Windows 10 Version 22H2 for x64-based Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows 10 Version 22H2 for 32-bit Systems

Security Updates (9)

Acknowledgments

Anonymous

Revision History

2026-08-11: Information published.