What’s Vulnerable › Vulnerabilities

CVE-2017-8558

• Severity: high (CVSS 7.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 43.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2017-06-29 · updated 2026-06-17
• Weakness: CWE-119

Description

The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on 32-bit versions of Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703 does not properly scan a specially crafted file leading to memory corruption. aka "Microsoft Malware Protection Engine Remote Code Execution Vulnerability".

Affected products

• Microsoft Endpoint Protection: all versions
• Microsoft Forefront Endpoint Protection: 2010
• Microsoft Security Essentials: all versions
• Microsoft Windows Defender: all versions
• Microsoft Windows Intune Endpoint Protection: all versions

References

• http://www.securityfocus.com/bid/99262
• http://www.securitytracker.com/id/1038783
• http://www.securitytracker.com/id/1038784
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558
• https://www.exploit-db.com/exploits/42264/
• http://www.securityfocus.com/bid/99262
• http://www.securitytracker.com/id/1038783
• http://www.securitytracker.com/id/1038784
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558
• https://www.exploit-db.com/exploits/42264/

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