{"id":"CVE-2015-2419","kind":"vulnerability","aliases":["CVE-2015-2419"],"related":[],"title":"Microsoft Internet Explorer: Microsoft Internet Explorer Memory Corruption Vulnerability","description":"JScript 9 in Microsoft Internet Explorer 10 and 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka \"JScript9 Memory Corruption Vulnerability.\"","summary":"Internet Explorer's JScript engine has a memory corruption bug that a malicious web page can trigger. An attacker who gets a victim to load that page can run code on the victim's machine or crash the browser.","severity":"critical","cvss":9.3,"epss":0.53127,"exploited":true,"exploited_at":"2022-03-28T00:00:00+00:00","products":[{"name":"Microsoft Internet Explorer","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","internet-explorer","other","windows"],"not_affected_if":["no-internet-explorer","patched-windows"],"how_to_check":"Check whether Internet Explorer is still in use on Windows machines and which cumulative update level is installed (winver, or Settings > Update).","fix":"Apply the Microsoft security update for CVE-2015-2419 per vendor instructions, or stop using Internet Explorer.","status":"open","published_at":"2015-07-14T21:59:33+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:19:55+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-23T21:19:55Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft security update for CVE-2015-2419 per vendor instructions, or stop using Internet Explorer.\nunknown","reach":"internet","impact":"high","summary":"Internet Explorer's JScript engine has a memory corruption bug that a malicious web page can trigger. An attacker who gets a victim to load that page can run code on the victim's machine or crash the browser.","category":"other","who_cares":["internet-explorer","windows"],"confidence":0.7,"needs_auth":"no","worst_case":"Remote code runs as the logged-in user after visiting a malicious site.","analyst_note":"Find the Microsoft bulletin (MS15-065) and the list of affected IE and Windows versions to fill in how_to_check and fix; sources here give no versions.","how_to_check":"Check whether Internet Explorer is still in use on Windows machines and which cumulative update level is installed (winver, or Settings > Update).\nunknown","needs_analyst":true,"not_affected_if":["no-internet-explorer","patched-windows"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000483,"input_tokens":2841,"output_tokens":397,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2015':11A,14A '-2419':12A,15A '10':70C '11':72C '9':65C 'aka':93C 'allow':73C 'arbitrari':78C 'attack':43B,75C 'browser':63B 'bug':34B 'caus':81C 'code':54B,79C 'corrupt':8A,33B,87C,96C 'craft':90C 'crash':61B 'cve':10A,13A 'denial':83C 'engin':29B 'execut':77C 'exploit':19B 'explor':3A,6A,22B,26B,69C 'explorer':18A 'get':45B 'internet':2A,5A,17A,21B,25B,68C 'internet-explor':20B 'jscript':28B,64C 'jscript9':94C 'load':49B 'machin':59B 'malici':37B 'memori':7A,32B,86C,95C 'microsoft':1A,4A,16A,67C 'page':39B,51B 'remot':74C 'run':53B 'servic':85C 'site':92C 'trigger':41B 'via':88C 'victim':47B,57B 'vulner':9A,97C 'web':38B,91C 'window':24B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2015-07-14T21:59:33+00:00","kev":{"dateAdded":"2022-03-28","dueDate":"2022-04-18","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2015-2419","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2015-2419","severity":null,"published_at":"2022-03-28T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T10:39:07+00:00","note":null},{"source":"epss","external_id":"CVE-2015-2419","url":"https://api.first.org/data/v1/epss?cve=CVE-2015-2419","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:45+00:00","fetched_at":"2026-10-23T19:13:45+00:00","note":null},{"source":"nvd","external_id":"CVE-2015-2419","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-2419","severity":null,"published_at":"2015-07-14T21:59:33+00:00","modified_at":"2026-06-17T00:24:04+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}