CVE-2026-100216

Undergoing Analysis Undergoing Analysis - In Progress

Windows Storage Stack-Based Buffer Overflow

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Stack-based buffer overflow in Windows Storage 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-2026-100216

EUVD

EUVD-2026-100329

Affected Vendors & Products

Vendor	Product	Version / Range
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 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-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This is a stack-based buffer overflow vulnerability in Windows Storage. It allows an authorized attacker with local access to elevate their privileges on the system. This occurs due to improper handling of data in memory, enabling the attacker to execute arbitrary code with higher system permissions.

Detection Guidance

Detection requires monitoring for unusual system behavior or crashes related to Windows Storage. Check Windows Event Logs for storage-related errors or application crashes. Use tools like Process Monitor to track storage operations. Ensure all Windows systems are updated with the latest patches from Microsoft.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain elevated privileges on your system. This means they could bypass security restrictions, install malicious software, access sensitive data, or perform actions requiring administrative rights. The impact is limited to local attacks since the attacker needs authorized access to the system first.

Compliance Impact

This vulnerability allows local privilege escalation through a stack-based buffer overflow in Windows Storage. Such unauthorized privilege elevation could potentially lead to unauthorized access to sensitive data, which may impact compliance with standards like GDPR (data protection) and HIPAA (health information privacy) by increasing the risk of data breaches or unauthorized data exposure.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Storage component. Monitor Microsoft's update guide for CVE-2026-100216 for specific patches.

Hi! I’m here to help you understand CVE-2026-100216. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70