CVE-2026-40400
Windows PowerShell Remote Code Execution vulnerability
Microsoft·Windows PowerShell Remote Code Execution
MSRC advisory July 14, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-40400
- Affected products
- Windows PowerShell Remote Code Execution · Microsoft Windows PowerShell Remote Code Execution · Microsoft
What happened
Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network.
What it means for your business
Windows PowerShell Remote Code Execution vulnerability (CVE-2026-40400) was added to Microsoft’s security update guidance. Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network. PremierePC tracks MSRC advisories for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.
Sources
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