CVE-2025-48809: Windows Secure Kernel Mode Information Disclosure Vulnerability

Overview

Severity

Medium (CVSS 5.5)

CVSS Vector

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

Category

Information Disclosure

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2025-Jul

Released

2025-07-08

EPSS Score

0.33% (percentile: 55.7%)

Description

Processor optimization removal or modification of security-critical code in Windows Kernel allows an authorized attacker to disclose information locally.

FAQ

What type of information could be disclosed by this vulnerability? Exploiting this vulnerability could allow the disclosure of certain kernel memory content.

Affected Products (3)

Windows

• Windows Server 2025 (Server Core installation)
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows Server 2025

Security Updates (1)

• 5062553

Acknowledgments

Windows Kernel Virtualization & Security Team

Revision History

• 2025-07-08: Information published.