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CVE-2024-20688: Secure Boot Security Feature Bypass Vulnerability

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-09 · updated 2026-06-17
• Weakness: CWE-121

Description

Secure Boot Security Feature Bypass Vulnerability

Affected products

• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2012: from 6.2.9200.0 before 6.2.9200.24821 — fixed in 6.2.9200.24821
• Microsoft Windows Server 2012 R2: from 6.3.9600.0 before 6.3.9600.21924 — fixed in 6.3.9600.21924

How to fix

Upgrade to a fixed version: Microsoft Windows Server 2012 6.2.9200.24821; Microsoft Windows Server 2012 R2 6.3.9600.21924. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20688
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-20688

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