CVE-2026-40380

MEDIUMNVD 6.26.2—

6.2

Heap-based buffer overflow in Volume Manager Extension Driver allows an authorized attacker to execute code with a physical attack.

CVSS v3: 6.2
EG Score: 6.2(high)
EPSS: 23.4%
KEV: Not listed

Published

May 12, 2026

Last Modified

May 14, 2026

References (1)

secure@microsofthttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40380

Vendor Advisories for CVE-2026-40380(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

CVE-2026-40380
Microsoft Security Response Center (MSRC)Remote Code Execution
Windows Volume Manager Extension Driver Remote Code Execution Vulnerability

Frequently asked(5)

What is CVE-2026-40380?

CVE-2026-40380 is a medium vulnerability published on May 12, 2026. Heap-based buffer overflow in Volume Manager Extension Driver allows an authorized attacker to execute code with a physical attack.

When was CVE-2026-40380 disclosed?

CVE-2026-40380 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-40380 actively exploited?

CVE-2026-40380 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-40380?

CVE-2026-40380 has a CVSS v3 base score of 6.2 (NVD).

How do I remediate CVE-2026-40380?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40380, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-40380

📅 Published

🔄 Last Modified

🔗 References (1)

📣 Vendor Advisories for CVE-2026-40380(1)

❓ Frequently asked(5)