CVE-2026-102211

Undergoing Analysis Undergoing Analysis - In Progress

Use After Free in Windows Virtualization-Based Security Enclave

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Use after free in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

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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-2026-102211

EUVD

EUVD-2026-100365

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 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-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
CWE-362	The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Attack-Flow Graph

Executive Summary

This vulnerability is a use after free issue in Windows Virtualization-Based Security (VBS) Enclave. It allows an authorized attacker with local access to elevate their privileges on the system.

Detection Guidance

This vulnerability involves a use-after-free issue in Windows Virtualization-Based Security (VBS) Enclave. Detection typically requires monitoring for unusual privilege escalation events or crashes in VBS components. Use Windows Event Viewer to check for Event ID 1000 or 1001 under Application or System logs for application crashes. Enable VBS logging via Event Tracing for Windows (ETW) with commands like 'logman start VBS_Trace -p Microsoft-Windows-Hyper-V-VBS -o vbs_trace.etl -ets' and analyze the logs for anomalies.

Impact Analysis

An attacker could exploit this to gain higher privileges on your system, potentially 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 in Windows VBS Enclave, which could enable unauthorized access to sensitive data or system functions. Such unauthorized access may violate compliance requirements under GDPR (data protection) and HIPAA (health data security) by exposing protected information or system integrity.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the use-after-free vulnerability in Windows Virtualization-Based Security (VBS) Enclave. Monitor Microsoft's update guide for patches and install them promptly.

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