Heap-Based Buffer Overflow in Windows Volume Manager Extension Driver
CVE-2026-40380

6.2MEDIUM

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1607
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Vendor
CVE Published:
12 May 2026

What is CVE-2026-40380?

A heap-based buffer overflow vulnerability in the Windows Volume Manager Extension Driver can be exploited by an authorized attacker through a physical attack vector, potentially allowing the execution of arbitrary code. This poses a significant security risk, particularly in environments where physical access cannot be sufficiently controlled. Users are advised to review relevant updates and apply necessary patches provided by Microsoft to mitigate this vulnerability.

Affected Version(s)

Windows 10 Version 1607 32-bit Systems 10.0.14393.0 < 10.0.14393.9140

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8755

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7291

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
6.2
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Physical
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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