CVE-2026-96848: Windows Win32 Kernel Subsystem Information Disclosure Vulnerability
Buffer over-read in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
Other sources
Windows Win32 Kernel Subsystem Information Disclosure Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.9376Patch KB5126651
Event History
Frequently Asked Questions
Which systems are in scope?
The affected software list includes Microsoft Windows 10, Windows 11, Windows Server 2019, Windows Server 2022, and Windows Server 2025.
What access does an attacker need to exploit this issue?
An attacker must already be authorized on the affected system and exploit the issue locally. The available data does not indicate that user interaction is required.
What is the expected impact if exploitation succeeds?
Successful exploitation can disclose information through a buffer over-read in the Windows Win32 Kernel Subsystem. The provided vector indicates high confidentiality impact, with no integrity or availability impact stated.