CVE-2026-83637

Awaiting Analysis Awaiting Analysis - Queue

Out-of-Bounds Read in Windows Kernel-Mode Drivers

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-83637

EUVD

EUVD-2026-99929

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 1607 10.0.14393.0
Microsoft	Windows	10 Version 1809 10.0.17763.0
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	Server 2012 6.2.9200.0
Microsoft	Windows	Server 2012 (Server Core installation) 6.2.9200.0
Microsoft	Windows	Server 2012 R2 6.3.9600.0
Microsoft	Windows	Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft	Windows	Server 2016 10.0.14393.0
Microsoft	Windows	Server 2016 (Server Core installation) 10.0.14393.0
Microsoft	Windows	Server 2019 10.0.17763.0
Microsoft	Windows	Server 2019 (Server Core installation) 10.0.17763.0
Microsoft	Windows	Server 2022 10.0.20348.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds read vulnerability in Windows Kernel-Mode Drivers. An authorized attacker with local access can exploit it to elevate their privileges on the system.

Impact Analysis

An attacker could gain higher-level permissions on your system, allowing them to install programs, view or delete data, or create new accounts with full user rights.

Compliance Impact

This vulnerability allows local privilege escalation through an out-of-bounds read in Windows Kernel-Mode Drivers. Such attacks could enable unauthorized access to sensitive data or system functions, potentially violating confidentiality requirements in GDPR and HIPAA. Compliance may be impacted if systems are not patched, as unauthorized privilege escalation could lead to data breaches or unauthorized processing of personal health information.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the out-of-bounds read vulnerability in Windows Kernel-Mode Drivers. Monitor Microsoft's update guide for the specific patch release.

Hi! I’m here to help you understand CVE-2026-83637. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70