High severity7.8NVD Advisory· Published Jun 29, 2017· Updated Jun 17, 2026
CVE-2017-8558
CVE-2017-8558
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".
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
10- cpe:2.3:a:microsoft:endpoint_protection:-:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:forefront_endpoint_protection:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:microsoft:forefront_endpoint_protection:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:forefront_endpoint_protection:2010:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:windows_intune_endpoint_protection:-:*:*:*:*:*:*:*
- Microsoft Corporation/Microsoft Malware Protection Enginev5Range: 32-bit versions only of Microsoft Forefront and Microsoft Defender on 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, and Windows Server 2016, Microsoft Exchange Server 2013 and 2016.
Patches
Vulnerability mechanics
References
5- www.securityfocus.com/bid/99262nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1038783nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1038784nvdThird Party AdvisoryVDB Entry
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558nvdVendor Advisory
- www.exploit-db.com/exploits/42264/nvdThird Party AdvisoryVDB Entry
News mentions
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