{
  "id": "CVE-2015-1635",
  "url": "https://spydr.io/cve/CVE-2015-1635",
  "published": "2015-04-14T20:59:01.263Z",
  "modified": "2026-06-17T00:22:44.360Z",
  "score": 9.8,
  "severity": "critical",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "CISA ADP",
  "epss": 0.99999,
  "epss_percentile": 0.99998,
  "exploited": true,
  "kev": {
    "added": "2022-02-10",
    "due": "2022-08-10",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Microsoft HTTP.sys Remote Code Execution Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2015-1635"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "microsoft"
  ],
  "products": [
    "microsoft windows 7",
    "microsoft windows 8",
    "microsoft windows 8.1",
    "microsoft windows server 2008",
    "microsoft windows server 2012"
  ],
  "cwes": [
    "CWE-94"
  ],
  "description": "HTTP.sys in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted HTTP requests, aka \"HTTP.sys Remote Code Execution Vulnerability.\"",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/131463/Microsoft-Windows-HTTP.sys-Proof-Of-Concept.html",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "http://www.osvdb.org/120629",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "http://www.securityfocus.com/bid/74013",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "http://www.securitytracker.com/id/1032109",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2015/ms15-034",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.exploit-db.com/exploits/36773/",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://www.exploit-db.com/exploits/36776/",
      "tags": [
        "Exploit",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1635",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2015-1635",
  "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."
    }
  ]
}