CVE-2026-96849: Windows Kernel-Mode Drivers 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

2026-Oct

Released

2026-10-13

Description

Use of uninitialized resource in Windows Kernel-Mode Drivers 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 (2)

Windows

• Windows 11 Version 26H1 for ARM64-based Systems
• Windows 11 version 26H1 for x64-based Systems

Security Updates (1)

• 5127646

Acknowledgments

pwn2addr, <a href="https://x.com/h4urek">h4urek</a> with <a href="https://secsys.fudan.edu.cn/">secsys lab</a>, <a href="https://www.linkedin.com/in/jung-hyun-yoon-bb9988114/">YuilMuil(Yoon Jung Hyun)</a>

Revision History

• 2026-10-13: Information published.