CVE-2026-50377

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Read in Windows Kernel

Publication date: 2026-07-14

Last updated on: 2026-07-21

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-21

Generated

2026-08-04

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-02

NVD

CVE-2026-50377

EUVD

EUVD-2026-43891

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_10_1607	to 10.0.14393.9339 (exc)
microsoft	windows_10_1607	to 10.0.14393.9339 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_10_1809	to 10.0.17763.9020 (exc)
microsoft	windows_server_2016	to 10.0.14393.9339 (exc)
microsoft	windows_server_2019	to 10.0.17763.9020 (exc)
microsoft	windows_server_2022	to 10.0.20348.5386 (exc)
microsoft	windows_server_2025	to 10.0.26100.33158 (exc)
microsoft	windows_10_21h2	to 10.0.19044.7548 (exc)
microsoft	windows_10_22h2	to 10.0.19045.7548 (exc)
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2525 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)

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 the Windows Kernel. An authorized attacker can exploit it to elevate their privileges locally on an affected system.

Impact Analysis

An attacker with local access could exploit this to gain higher privileges, potentially allowing them to execute malicious code or access sensitive data on your system.

Compliance Impact

This vulnerability allows local privilege escalation through an out-of-bounds read in the Windows Kernel. While not directly affecting data confidentiality or integrity, unauthorized privilege escalation could lead to unauthorized access to sensitive data, potentially violating GDPR or HIPAA compliance if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Kernel vulnerability. Monitor Microsoft's update guide for patches and install them promptly.

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