CVE-2026-40422
Windows File Explorer Information Disclosure vulnerability
Microsoft·Windows File Explorer Information Disclosure
MSRC advisory July 14, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-40422
- Affected products
- Windows File Explorer Information Disclosure · Microsoft Windows File Explorer Information Disclosure · Microsoft
What happened
Use of uninitialized resource in Windows File Explorer allows an authorized attacker to disclose information locally.
What it means for your business
Windows File Explorer Information Disclosure vulnerability (CVE-2026-40422) was added to Microsoft’s security update guidance. Use of uninitialized resource in Windows File Explorer allows an authorized attacker to disclose information locally. PremierePC tracks MSRC advisories for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.
Sources
Related briefs
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Need help patching?
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