What is CVE-2026-40400?

CVE-2026-40400 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows PowerShell Remote Code Execution Vulnerability

Which CVE IDs does CVE-2026-40400 cover?

CVE-2026-40400 covers the following CVE IDs: CVE-2026-40400. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-40400?

CVE-2026-40400 has a CVSS v3 base score of 8.0, published by Microsoft Security Response Center (MSRC).

CVE-2026-40400HighCVSS 8.0

Windows PowerShell Remote Code Execution Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

July 17, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-40400 →

🔗 CVE IDs covered (1)

📋 Description