CVE-2026-58638
Windows Boot Loader Security Feature Bypass vulnerability
MSRC advisory July 14, 2026
Alert details
- Source feed
- Microsoft MSRC
- CVE ID
- CVE-2026-58638
- Affected products
- Windows Boot Loader Security Feature Bypass · Microsoft Windows Boot Loader Security Feature Bypass · Microsoft
What happened
Missing cryptographic step in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.
What it means for your business
Windows Boot Loader Security Feature Bypass vulnerability (CVE-2026-58638) was added to Microsoft’s security update guidance. Missing cryptographic step in Windows Boot Loader allows an authorized attacker to bypass a security feature locally. If you need help checking exposure, call (864) 335-9223.
Sources
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