{"id":"CVE-2011-1998","aliases":["EUVD-2011-1992","GHSA-825m-chm7-qrrg"],"status":"published","title":"Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote...","description":"Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that was not properly initialized, aka \"Jscript9.dll 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":"2026-11-08","score":0.21228,"percentile":0.97607,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-908"],"published":"2011-10-12T01:00:00Z","modified":"2026-06-16T23:30:34Z","products":[{"vendor":"microsoft","product":"internet_explorer"}],"references":[{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-081","tags":["vendor-advisory","x_refsource_MS","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/49963","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A13199","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","Tool Signature"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1998"},{"url":"https://github.com/advisories/GHSA-825m-chm7-qrrg"}],"sources":{"cve":[{"id":"CVE-2011-1998","description":"Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that was not properly initialized, aka \"Jscript9.dll Remote Code Execution Vulnerability.\"","status":"published","published":"2011-10-12T01:00:00Z","modified":"2024-08-06T22:46:01.072Z","updated_at":"2026-11-02T14:35:38.711857Z"}],"euvd":[{"id":"EUVD-2011-1992","description":"Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that was not properly initialized, aka \"Jscript9.dll Remote Code Execution Vulnerability.\"","status":"published","published":"2011-10-12T01:00:00Z","modified":"2024-08-06T22:46:01Z","updated_at":"2026-11-03T01:55:54.133107Z"}],"ghsa":[{"id":"GHSA-825m-chm7-qrrg","title":"Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote...","description":"Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that was not properly initialized, aka \"Jscript9.dll Remote Code Execution Vulnerability.\"","status":"published","published":"2022-05-13T01:03:27Z","modified":"2023-02-01T05:02:33Z","cwes":["CWE-908"],"updated_at":"2026-11-02T14:49:56.778846Z"}],"nvd":[{"id":"CVE-2011-1998","description":"Microsoft Internet Explorer 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that was not properly initialized, aka \"Jscript9.dll Remote Code Execution Vulnerability.\"","status":"published","published":"2011-10-12T02:52:43.677Z","modified":"2026-06-16T23:30:34.347Z","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-908"],"updated_at":"2026-11-02T14:02:10.769216Z"}]}}