{"id":"CVE-2017-8558","aliases":["EUVD-2017-17508","GHSA-ghvf-8cx5-ch3h"],"status":"published","title":"The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on...","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\".","severity":{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.43588,"percentile":0.98748,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119"],"published":"2017-06-29T13:00:00Z","modified":"2026-06-17T01:26:34Z","exploits":[{"source":"exploitdb","id":"EDB-42264","title":"Microsoft MsMpEng - mpengine x86 Emulator Heap Corruption in VFS API","type":"dos","platform":"windows","date":"2017-06-27","verified":true,"url":"https://www.exploit-db.com/exploits/42264"}],"products":[{"vendor":"microsoft","product":"endpoint_protection"},{"vendor":"microsoft","product":"forefront_endpoint_protection"},{"vendor":"microsoft","product":"microsoft malware protection engine"},{"vendor":"microsoft","product":"security_essentials"},{"vendor":"microsoft","product":"windows_defender"},{"vendor":"microsoft","product":"windows_intune_endpoint_protection"},{"vendor":"microsoft corporation","product":"microsoft malware protection engine"}],"references":[{"url":"http://www.securityfocus.com/bid/99262","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://www.exploit-db.com/exploits/42264/","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.securitytracker.com/id/1038783","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8558","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id/1038784","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-8558"},{"url":"https://www.exploit-db.com/exploits/42264"},{"url":"https://github.com/advisories/GHSA-ghvf-8cx5-ch3h"}],"sources":{"cve":[{"id":"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\".","status":"published","published":"2017-06-29T13:00:00Z","modified":"2024-08-05T16:41:24.089Z","updated_at":"2026-11-02T14:33:15.201133Z"}],"euvd":[{"id":"EUVD-2017-17508","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\".","status":"published","published":"2017-06-29T13:00:00Z","modified":"2024-08-05T16:41:24Z","updated_at":"2026-11-03T02:23:30.219959Z"}],"ghsa":[{"id":"GHSA-ghvf-8cx5-ch3h","title":"The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on...","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\".","status":"published","published":"2022-05-13T01:47:37Z","modified":"2025-04-20T03:39:38Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:01:47.903342Z"}],"nvd":[{"id":"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\".","status":"published","published":"2017-06-29T13:29:00.283Z","modified":"2026-06-17T01:26:34.697Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:03:51.893212Z"}]}}