CVE-2026-108130

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Heap-based Buffer Overflow in Windows VBS Enclave

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Heap-based buffer overflow 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

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-108130

EUVD

EUVD-2026-100449

Affected Vendors & Products

Vendor	Product	Version / Range
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 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-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

This is a heap-based buffer overflow vulnerability in Windows Virtualization-Based Security (VBS) Enclave. An authorized attacker can exploit it to elevate privileges locally on affected systems.

Detection Guidance

This vulnerability is a local privilege escalation in Windows VBS Enclave. Detection requires checking for unusual privilege escalation attempts or heap corruption in VBS components. Use Windows Event Viewer to inspect logs for VBS-related errors or security events. Microsoft Defender for Endpoint can also detect anomalous behavior in VBS processes.

Impact Analysis

An attacker could gain higher privileges on your system, allowing them to perform unauthorized actions like installing programs, viewing or deleting data, or creating 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 system resources. Such unauthorized access may lead to data breaches or exposure of protected information, potentially violating compliance requirements under GDPR, HIPAA, or other regulations that mandate strict access controls and data protection measures.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave. Monitor Microsoft's update guide for specific patches.

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