{"id":"CVE-2011-4520","aliases":["EUVD-2011-4446","GHSA-92hc-v7h5-rqc5"],"status":"published","title":"Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows...","description":"Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows remote attackers to cause a denial of service via a crafted web page.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02367,"percentile":0.83917,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-119"],"published":"2013-05-23T17:00:00Z","modified":"2026-06-16T23:34:58Z","exploits":[{"source":"exploitdb","id":"EDB-18049","title":"Microsys PROMOTIC 8.1.4 - ActiveX GetPromoticSite Unitialized Pointer","type":"dos","platform":"windows","date":"2011-10-13","verified":true,"url":"https://www.exploit-db.com/exploits/18049"}],"products":[{"vendor":"microsys","product":"promotic"}],"references":[{"url":"http://www.promotic.eu/en/pmdoc/News.htm#ver80105","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://ics-cert.us-cert.gov/advisories/ICSA-12-024-02","tags":["x_refsource_MISC","x_transferred","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4520"},{"url":"https://github.com/advisories/GHSA-92hc-v7h5-rqc5"}],"sources":{"cve":[{"id":"CVE-2011-4520","description":"Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows remote attackers to cause a denial of service via a crafted web page.","status":"published","published":"2013-05-23T17:00:00Z","modified":"2024-09-16T18:49:04.812Z","updated_at":"2026-11-02T14:35:37.989579Z"}],"euvd":[{"id":"EUVD-2011-4446","description":"Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows remote attackers to cause a denial of service via a crafted web page.","status":"published","published":"2013-05-23T17:00:00Z","modified":"2024-09-16T18:49:04Z","updated_at":"2026-11-03T00:55:29.13849Z"}],"ghsa":[{"id":"GHSA-92hc-v7h5-rqc5","title":"Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows...","description":"Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows remote attackers to cause a denial of service via a crafted web page.","status":"published","published":"2022-05-17T05:09:33Z","modified":"2023-01-28T05:03:34Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:44:00.261556Z"}],"nvd":[{"id":"CVE-2011-4520","description":"Heap-based buffer overflow in an ActiveX component in MICROSYS PROMOTIC before 8.1.5 allows remote attackers to cause a denial of service via a crafted web page.","status":"published","published":"2013-05-23T17:55:02.85Z","modified":"2026-06-16T23:34:58.987Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:12.639283Z"}]}}