{"id":"CVE-2012-2521","aliases":["EUVD-2012-2507","GHSA-rg5x-2rm4-gx5f"],"status":"published","title":"Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows...","description":"Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka \"Asynchronous NULL Object Access Remote Code Execution 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":"2026-11-07","score":0.20872,"percentile":0.97565,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2012-08-15T01:00:00Z","modified":"2026-06-16T23:41:38Z","products":[{"vendor":"microsoft","product":"internet_explorer"}],"references":[{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-052","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15742","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA12-227A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-2521"},{"url":"https://github.com/advisories/GHSA-rg5x-2rm4-gx5f"}],"sources":{"cve":[{"id":"CVE-2012-2521","description":"Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka \"Asynchronous NULL Object Access Remote Code Execution Vulnerability.\"","status":"published","published":"2012-08-15T01:00:00Z","modified":"2024-08-06T19:34:25.812Z","updated_at":"2026-11-02T14:34:49.937255Z"}],"euvd":[{"id":"EUVD-2012-2507","description":"Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka \"Asynchronous NULL Object Access Remote Code Execution Vulnerability.\"","status":"published","published":"2012-08-15T01:00:00Z","modified":"2024-08-06T19:34:25Z","updated_at":"2026-11-03T01:56:14.434498Z"}],"ghsa":[{"id":"GHSA-rg5x-2rm4-gx5f","title":"Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows...","description":"Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka \"Asynchronous NULL Object Access Remote Code Execution Vulnerability.\"","status":"published","published":"2022-05-14T02:35:09Z","modified":"2023-02-02T05:06:08Z","cwes":["CWE-94"],"updated_at":"2026-11-02T14:52:15.07961Z"}],"nvd":[{"id":"CVE-2012-2521","description":"Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka \"Asynchronous NULL Object Access Remote Code Execution Vulnerability.\"","status":"published","published":"2012-08-15T01:55:01.587Z","modified":"2026-06-16T23:41:38.08Z","cvss":[{"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-94"],"updated_at":"2026-11-02T14:02:15.188652Z"}]}}