CVE-2026-45487
Windows Program Compatibility Assistant Service Elevation of Privilege vulnerability
MSRC advisory June 9, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-45487
- Affected products
- Windows Program Compatibility Assistant Service Elevation of Privilege · Microsoft Windows Program Compatibility Assistant Service Elevation of Privilege · Microsoft
What happened
Time-of-check time-of-use (TOCTOU) race condition in Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.
What it means for your business
Windows Program Compatibility Assistant Service Elevation of Privilege vulnerability (CVE-2026-45487) was added to Microsoft’s security update guidance. Time-of-check time-of-use (TOCTOU) race condition in Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally. If you need help checking exposure, call (864) 335-9223.
Sources
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