CVE-2026-83712

Analyzed Analyzed - Analysis Complete

Out-of-bounds Write in Windows NTFS

Publication date: 2026-10-13

Last updated on: 2026-10-29

Assigner: Microsoft Corporation

Description

Out-of-bounds write in Windows NTFS allows an authorized attacker to execute code locally.

CVSS Scores

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Meta Information

Published

2026-10-13

Last Modified

2026-10-29

Generated

2026-11-08

AI Q&A

2026-10-14

EPSS Evaluated

2026-11-07

NVD

CVE-2026-83712

EUVD

EUVD-2026-99341

Affected Vendors & Products

Vendor	Product	Version / Range
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_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-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds write in Windows NTFS. It allows an authorized attacker with local access to execute arbitrary code on the system by exploiting a flaw in how NTFS handles memory operations.

Detection Guidance

Detecting this vulnerability requires checking for unpatched Windows systems with vulnerable NTFS versions. Use Windows Update to verify if the latest security patches are installed. Check the NTFS driver version via Command Prompt with 'fsutil fsinfo volumeinfo C:' and compare against Microsoft's advisory.

Impact Analysis

An attacker could gain control of your system, install malware, steal data, or perform other malicious actions. Since it requires local access, physical or remote authenticated access could be exploited.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data privacy). Organizations may face compliance penalties if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the NTFS vulnerability. Monitor Microsoft's security advisories for patches and install them promptly.

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