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CVE-2011-1983

Status: ModifiedHigh (9.3)—

Use-after-free vulnerability in Microsoft Office 2007 SP2 and SP3, Office 2010 Gold and SP1, and Office for Mac 2011 allows remote attackers to execute arbitrary code via a crafted Word document, aka "Word Use After Free 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).

Affected technologies (1)

Microsoft — Office

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2011-1983",
  "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": true
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2011-12-14T00:55:01.153",
  "references": [
    {
      "url": "http://www.securitytracker.com/id?1026409",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.us-cert.gov/cas/techalerts/TA11-347A.html",
      "tags": [
        "US Government Resource"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-089",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14197",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14558",
      "source": "secure@microsoft.com"
    },
    {
      "url": "http://www.securitytracker.com/id?1026409",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://www.us-cert.gov/cas/techalerts/TA11-347A.html",
      "tags": [
        "US Government Resource"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-089",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14197",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14558",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-399"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use-after-free vulnerability in Microsoft Office 2007 SP2 and SP3, Office 2010 Gold and SP1, and Office for Mac 2011 allows remote attackers to execute arbitrary code via a crafted Word document, aka \"Word Use After Free Vulnerability.\""
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de uso después de liberación en Microsoft Office 2007 SP2 y SP3, Office 2010 Gold y SP1, y Office 2011 para Mac permite a atacantes remotos ejecutar código de su elección a través de un documento de Word específicamente modificado para tal fin. Se trata de un problema también conocido como \"vulnerabilidad de uso después de liberación de Microsoft Word\"."
    }
  ],
  "lastModified": "2026-06-16T23:30:32.787",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:office:2007:sp2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "08AF794A-435D-4171-9DBB-EB7FAED96DBA"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2007:sp3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FEECD12A-5BEF-4675-B62E-86CF4A7474D7"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2010:*:x32:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9AC0BEF9-2417-48C5-BC95-F95F41F08795"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2010:*:x64:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C60D2557-347B-41BD-91D5-A51C88630B73"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2010:sp1:x32:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "C91F1A74-BE24-4EF7-8E3B-E5E6448E7E40"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2010:sp1:x64:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8239CEF1-BD02-4ACE-A0C2-75A9EAA15914"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2011:*:mac:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0D84FC39-29AA-4EF2-ACE7-E72635126F2B"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}