What’s Vulnerable › Vulnerabilities

CVE-2018-8435

• Severity: medium (CVSS 4.2 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-09-13 · updated 2026-06-17
• Weakness: CWE-331

Description

A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source, aka "Windows Hyper-V Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.

Affected products

• Microsoft Windows 10 Version 1607: 1607, 1703, 1709, 1803
• Microsoft Windows Server 2016: 1709, 1803
• Microsoft Windows 10 Version 1607: Version 1607 for x64-based Systems, Version 1703 for x64-based Systems, Version 1709 for x64-based Systems, Version 1803 for x64-based Systems, x64-based Systems
• Microsoft Windows 10 Servers: version 1709 (Server Core Installation), version 1803 (Server Core Installation)
• Microsoft Windows Server 2016: (Server Core installation)

References

• http://www.securityfocus.com/bid/105240
• http://www.securitytracker.com/id/1041624
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8435
• http://www.securityfocus.com/bid/105240
• http://www.securitytracker.com/id/1041624
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8435

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