{
  "id": "CVE-2009-1123",
  "url": "https://spydr.io/cve/CVE-2009-1123",
  "published": "2009-06-10T18:30:00.327Z",
  "modified": "2026-06-16T23:06:33.440Z",
  "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": 0.04878,
  "epss_percentile": 0.91836,
  "exploited": true,
  "kev": {
    "added": "2022-03-03",
    "due": "2022-03-24",
    "action": "Apply updates per vendor instructions.",
    "ransomware": "Unknown",
    "name": "Microsoft Windows Improper Input Validation Vulnerability",
    "notes": "https://nvd.nist.gov/vuln/detail/CVE-2009-1123"
  },
  "ssvc_exploitation": "active",
  "vendors": [
    "microsoft"
  ],
  "products": [
    "microsoft windows 2000",
    "microsoft windows server 2003",
    "microsoft windows server 2008",
    "microsoft windows vista",
    "microsoft windows xp"
  ],
  "cwes": [],
  "description": "The kernel in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold, SP1, and SP2, and Server 2008 SP2 does not properly validate changes to unspecified kernel objects, which allows local users to gain privileges via a crafted application, aka \"Windows Kernel Desktop Vulnerability.\"",
  "status": "Analyzed",
  "score_type": "Primary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 7.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "http://osvdb.org/54940",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "http://secunia.com/advisories/35372",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "http://www.securitytracker.com/id?1022359",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "VDB Entry"
      ]
    },
    {
      "url": "http://www.us-cert.gov/cas/techalerts/TA09-160A.html",
      "tags": [
        "Broken Link",
        "Third Party Advisory",
        "US Government Resource"
      ]
    },
    {
      "url": "http://www.vupen.com/english/advisories/2009/1544",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-025",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6206",
      "tags": [
        "Broken Link"
      ]
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-1123",
      "tags": [
        "US Government Resource"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2009-1123",
  "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."
    }
  ]
}