CVE-2025-62468: Windows Defender Firewall Service 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

More Likely

Patch Tuesday

2025-Dec

Released

2025-12-09

Last Updated

2025-12-12

EPSS Score

0.08% (percentile: 24.8%)

Description

Out-of-bounds read in Windows Defender Firewall Service allows an authorized attacker to disclose information locally.

FAQ

What type of information could be disclosed by this vulnerability? An attacker who successfully exploited this vulnerability could potentially read portions of data segment of the module.

Affected Products (9)

Windows

• 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 Server 2022, 23H2 Edition (Server Core installation)
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems
• Windows Server 2025

Security Updates (4)

• 5072033
• 5072014
• 5071417
• 5071542

Acknowledgments

<a href="https://twitter.com/keyz3r0">k0shl</a> with <a href="https://www.cyberkl.com/">Kunlun Lab</a>

Revision History

• 2025-12-09: Information published.
• 2025-12-12: Corrected CVSS Privileges metric to PR:L, corrected Exploitability assessment to Expoitation More Likely, and updated FAQs. These are informational changes only.