{
  "id": "CVE-2017-8540",
  "url": "https://spydr.io/cve/CVE-2017-8540",
  "published": "2017-05-26T20:29:00.427Z",
  "modified": "2026-06-17T01:26:32.713Z",
  "score": 7.8,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "score_source": "NVD",
  "epss": 0.71874,
  "epss_percentile": 0.99415,
  "exploited": true,
  "kev": {
    "added": "2022-03-03",
    "due": "2022-03-24",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Microsoft Malware Protection Engine Improper Restriction of Operations Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2017-8540"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "Microsoft Corporation"
  ],
  "products": [
    "Microsoft Corporation Malware Protection Engine"
  ],
  "cwes": [
    "CWE-787"
  ],
  "description": "The Microsoft Malware Protection Engine running on 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, does not properly scan a specially crafted file leading to memory corruption. aka \"Microsoft Malware Protection Engine Remote Code Execution Vulnerability\", a different vulnerability than CVE-2017-8538 and CVE-2017-8541.",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 7.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://www.securityfocus.com/bid/98703",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "http://www.securitytracker.com/id/1038571",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8540",
      "tags": [
        "Mitigation",
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.exploit-db.com/exploits/42088/",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-8540",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2017-8540",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}