{"id":"CVE-2012-4787","aliases":["EUVD-2012-4712","GHSA-ccxg-v3q3-fr8c"],"status":"published","title":"Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to...","description":"Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly initialized or (2) is deleted, aka \"Improper Ref Counting Use After Free Vulnerability.\"","severity":{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.17572,"percentile":0.97161,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399","CWE-416"],"published":"2012-12-12T00:00:00Z","modified":"2026-06-16T23:45:42Z","products":[{"vendor":"microsoft","product":"internet_explorer"}],"references":[{"url":"http://www.us-cert.gov/cas/techalerts/TA12-346A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-077","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16211","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-4787"},{"url":"https://github.com/advisories/GHSA-ccxg-v3q3-fr8c"}],"sources":{"cve":[{"id":"CVE-2012-4787","description":"Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly initialized or (2) is deleted, aka \"Improper Ref Counting Use After Free Vulnerability.\"","status":"published","published":"2012-12-12T00:00:00Z","modified":"2024-10-17T18:24:33.9Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:34:51.584538Z"}],"euvd":[{"id":"EUVD-2012-4712","description":"Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly initialized or (2) is deleted, aka \"Improper Ref Counting Use After Free Vulnerability.\"","status":"published","published":"2012-12-12T00:00:00Z","modified":"2024-10-17T18:24:33Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:27:33.799805Z"}],"ghsa":[{"id":"GHSA-ccxg-v3q3-fr8c","title":"Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to...","description":"Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly initialized or (2) is deleted, aka \"Improper Ref Counting Use After Free Vulnerability.\"","status":"published","published":"2022-05-13T01:15:43Z","modified":"2024-10-17T21:32:31Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:58:32.565259Z"}],"nvd":[{"id":"CVE-2012-4787","description":"Use-after-free vulnerability in Microsoft Internet Explorer 9 and 10 allows remote attackers to execute arbitrary code via a crafted web site that triggers access to an object that (1) was not properly initialized or (2) is deleted, aka \"Improper Ref Counting Use After Free Vulnerability.\"","status":"published","published":"2012-12-12T00:55:01.387Z","modified":"2026-06-16T23:45:42.943Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-399","CWE-416"],"updated_at":"2026-11-02T14:02:16.958223Z"}]}}