CVE-2026-70284

Analyzed Analyzed - Analysis Complete

Use of Uninitialized Resource in Windows Win32 Kernel Subsystem

Publication date: 2026-10-13

Last updated on: 2026-10-21

Assigner: Microsoft Corporation

Description

Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.

CVSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-21

Generated

2026-11-08

AI Q&A

2026-10-14

EPSS Evaluated

2026-11-07

NVD

CVE-2026-70284

EUVD

EUVD-2026-99267

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_server_2012	r2
microsoft	windows_server_2012	*
microsoft	windows_10_1607	to 10.0.14393.9612 (exc)
microsoft	windows_10_1607	to 10.0.14393.9612 (exc)
microsoft	windows_10_1809	to 10.0.17763.9376 (exc)
microsoft	windows_10_1809	to 10.0.17763.9376 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7807 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_server_2025	to 10.0.26100.33650 (exc)
microsoft	windows_server_2022	to 10.0.20348.5761 (exc)
microsoft	windows_server_2016	to 10.0.14393.9612 (exc)
microsoft	windows_server_2019	to 10.0.17763.9376 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7807 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-908	The product uses or accesses a resource that has not been initialized.

Attack-Flow Graph

Executive Summary

This vulnerability involves the use of an uninitialized resource in the Windows Win32 Kernel Subsystem. An authorized attacker could exploit this to disclose information locally on affected systems.

Detection Guidance

This vulnerability involves uninitialized resource use in the Windows Win32 Kernel Subsystem. Detection typically requires analyzing kernel memory or system logs for anomalies. No specific commands are provided in the CVE details. Check Microsoft's security advisories for updates or tools like Windows Event Viewer for suspicious kernel-related events.

Impact Analysis

An attacker with local access could exploit this to read sensitive information from memory, potentially leading to unauthorized data disclosure or further system compromise.

Compliance Impact

This vulnerability allows local information disclosure due to uninitialized resources in the Windows Win32 Kernel Subsystem. Such disclosure risks exposing sensitive data, which could violate GDPR's data protection principles or HIPAA's confidentiality requirements if personal or health information is involved.

Mitigation Strategies

Apply the latest Windows security updates immediately. Enable automatic updates if not already configured. Monitor Microsoft's security bulletins for patches specific to this CVE. Restrict local user permissions to reduce attack surface until updates are applied.

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