{
  "id": "CVE-2011-1889",
  "url": "https://spydr.io/cve/CVE-2011-1889",
  "published": "2011-06-16T20:55:02.543Z",
  "modified": "2026-06-16T23:30:18.967Z",
  "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": "NVD",
  "epss": 0.4902,
  "epss_percentile": 0.98855,
  "exploited": true,
  "kev": {
    "added": "2022-03-03",
    "due": "2022-03-24",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Microsoft Forefront TMG Remote Code Execution Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2011-1889"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "microsoft"
  ],
  "products": [
    "microsoft forefront threat management gateway"
  ],
  "cwes": [
    "CWE-119"
  ],
  "description": "The NSPLookupServiceNext function in the client in Microsoft Forefront Threat Management Gateway (TMG) 2010 allows remote attackers to execute arbitrary code via vectors involving unspecified requests, aka \"TMG Firewall Client Memory Corruption Vulnerability.\"",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://secunia.com/advisories/44857",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "http://www.securityfocus.com/bid/48181",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "http://www.securitytracker.com/id?1025637",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-040",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/67736",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12642",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2011-1889",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1889",
  "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."
    }
  ]
}