CVE-2026-69721

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Out-of-Bounds Read in Windows iSCSI

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Windows iSCSI allows an authorized attacker to disclose information 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-2026-69721

EUVD

EUVD-2026-99275

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	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0
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 the Windows iSCSI component. It allows an authorized attacker with local access to read beyond the intended memory boundaries, potentially exposing sensitive information stored in memory.

Detection Guidance

This vulnerability is an out-of-bounds read in Windows iSCSI that allows local information disclosure. Detection primarily involves checking for affected Windows versions and applying Microsoft security updates. Use Windows Update or run 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"' to verify your system version. Monitor Microsoft's update guide for patches.

Impact Analysis

An attacker could exploit this to access confidential data on your system, such as passwords or encryption keys, if they already have local access. This could lead to further compromise of your system or data.

Compliance Impact

This vulnerability allows an authorized attacker to disclose information locally through an out-of-bounds read in Windows iSCSI. This could lead to unauthorized access to sensitive data, which may violate compliance requirements under GDPR and HIPAA if personal or health information is exposed.

Mitigation Strategies

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

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