CVE-2026-42900
Microsoft Windows App Store Elevation of Privilege vulnerability
MSRC advisory July 14, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-42900
- Affected products
- Microsoft Windows App Store Elevation of Privilege · Microsoft Microsoft Windows App Store Elevation of Privilege · Microsoft
What happened
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network.
What it means for your business
Microsoft Windows App Store Elevation of Privilege vulnerability (CVE-2026-42900) was added to Microsoft’s security update guidance. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows App Store allows an unauthorized attacker to elevate privileges over a network. If you need help checking exposure, call (864) 335-9223.
Sources
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