Summary
Impact: Security Feature Bypass. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What kind of security feature could be bypassed by successfully exploiting this vulnerability?
A successful attacker could bypass the Windows Key Storage Provider which issues key certificates for trust in attestation scenarios.
Security updates
10.0.17763.9376 — https://support.microsoft.com/help/5126651
10.0.20348.5761 — https://support.microsoft.com/help/5126655
10.0.19044.7807 — https://support.microsoft.com/help/5126657
10.0.26100.33650 — https://support.microsoft.com/help/5126646
10.0.26200.9711 — https://support.microsoft.com/help/5127648
10.0.22631.7652 — https://support.microsoft.com/help/5126653
10.0.28000.3231 — https://support.microsoft.com/help/5127646
Vulnerabilities 1
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Medium 4.4
Windows Virtualization-Based Security (VBS) Enclave Security Feature Bypass Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to bypass a security feature locally.
Revision history
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#1
Information published.
References
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CVE-2026-70075 Windows Virtualization-Based Security (VBS) Enclave Security Feature Bypass Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70075
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss