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CVE-2016-3223

Status: ModifiedHigh (8.1)—💥 Exploit

Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 mishandle LDAP authentication, which allows man-in-the-middle attackers to gain privileges by modifying group-policy update data within a domain-controller data stream, aka "Group Policy Elevation of Privilege Vulnerability."

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (7)

Microsoft — Windows 10Microsoft — Windows 7Microsoft — Windows 8.1Microsoft — Windows RT 8.1Microsoft — Windows Server 2008Microsoft — Windows Server 2012Microsoft — Windows Vista

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2016-3223",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 9.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2016-06-16T01:59:26.967",
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/138248/Microsoft-Windows-7-Group-Policy-Privilege-Escalation.html",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id/1036100",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-072",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://www.exploit-db.com/exploits/40219/",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://packetstormsecurity.com/files/138248/Microsoft-Windows-7-Group-Policy-Privilege-Escalation.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-072",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.exploit-db.com/exploits/40219/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, and Windows 10 Gold and 1511 mishandle LDAP authentication, which allows man-in-the-middle attackers to gain privileges by modifying group-policy update data within a domain-controller data stream, aka \"Group Policy Elevation of Privilege Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Microsoft Windows Vista SP2, Windows Server 2008 SP2 y R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold y R2, Windows RT 8.1 y Windows 10 Gold y 1511 no maneja correctamente la autenticación LDAP, lo que permite a atacantes man-in-the-middle obtener privilegios modificando los datos de actualización de políticas de grupo dentro de un flujo de datos de controlador de dominio, también conocida como \"Group Policy Elevation of Privilege Vulnerability.\""
    }
  ],
  "lastModified": "2026-06-17T00:45:19.577",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "232581CC-130A-4C62-A7E9-2EC9A9364D53"
            },
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              "vulnerable": true,
              "matchCriteriaId": "7519928D-0FF2-4584-8058-4C7764CD5671"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_8.1:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A7F51B5F-AA19-4D31-89FA-6DFAC4BA8F0F"
            },
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              "vulnerable": true,
              "matchCriteriaId": "197E82CB-81AF-40F1-A55C-7B596891A783"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0C28897B-044A-447B-AD76-6397F8190177"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "2ACA9287-B475-4AF7-A4DA-A7143CEF9E57"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A7DF96F8-BA6A-4780-9CA3-F719B3F81074"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "DB18C4CE-5917-401E-ACF7-2747084FD36E"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "0A0D2704-C058-420B-B368-372D1129E914"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}