{"id":"CVE-2019-0752","kind":"vulnerability","aliases":["CVE-2019-0752"],"related":[],"title":"Microsoft Internet Explorer: Microsoft Internet Explorer Type Confusion Vulnerability","description":"A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer, aka 'Scripting Engine Memory Corruption Vulnerability'. This CVE ID is unique from CVE-2019-0739, CVE-2019-0753, CVE-2019-0862.","summary":"A type confusion flaw in the Internet Explorer scripting engine lets a crafted web page run code in the browser's context. An attacker gets remote code execution on a victim's machine when they open a malicious page in Internet Explorer.","severity":"high","cvss":7.6,"epss":0.81679,"exploited":true,"exploited_at":"2022-02-15T00:00:00+00:00","products":[{"name":"Microsoft Internet Explorer","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","internet-explorer","ransomware","windows"],"not_affected_if":["ie-not-installed","unpatched-systems-absent"],"how_to_check":"Check whether Internet Explorer is installed and enabled on Windows machines, for example by reviewing the installed Windows updates for the Microsoft patch addressing CVE-2019-0752.","fix":"Apply the Microsoft security updates for Internet Explorer per vendor instructions, as CISA requires.","status":"open","published_at":"2019-04-09T21:29:00+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:26:34+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-10-23T21:26:34Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft security updates for Internet Explorer per vendor instructions, as CISA requires.\nunknown","reach":"internet","impact":"high","summary":"A type confusion flaw in the Internet Explorer scripting engine lets a crafted web page run code in the browser's context. An attacker gets remote code execution on a victim's machine when they open a malicious page in Internet Explorer.","category":"infrastructure","who_cares":["internet-explorer","windows"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code on the victim's machine via a malicious web page.","analyst_note":"Confirm the exact patched Windows update KB numbers and affected Windows versions from the Microsoft advisory for CVE-2019-0752; sources give no version or command.","how_to_check":"Check whether Internet Explorer is installed and enabled on Windows machines, for example by reviewing the installed Windows updates for the Microsoft patch addressing CVE-2019-0752.\nunknown","needs_analyst":true,"not_affected_if":["unpatched-systems-absent","ie-not-installed"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000496,"input_tokens":2831,"output_tokens":425,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-0739':102C '-0752':12A,15A '-0753':105C '-0862':108C '-2019':11A,14A,101C,104C,107C 'aka':88C 'attack':49B 'browser':45B 'code':42B,52B,70C 'confus':8A,28B 'context':47B 'corrupt':92C 'craft':38B 'cve':10A,13A,95C,100C,103C,106C 'engin':35B,80C,90C 'execut':53B,71C 'exist':73C 'exploit':19B 'explor':3A,6A,23B,33B,67B,87C 'explorer':18A 'flaw':29B 'get':50B 'handl':81C 'id':96C 'infrastructur':20B 'internet':2A,5A,17A,22B,32B,66B,86C 'internet-explor':21B 'let':36B 'machin':58B 'malici':63B 'memori':84C,91C 'microsoft':1A,4A,16A 'object':82C 'open':61B 'page':40B,64B 'ransomwar':24B 'remot':51B,69C 'run':41B 'script':34B,79C,89C 'type':7A,27B 'uniqu':98C 'victim':56B 'vulner':9A,72C,93C 'way':76C 'web':39B 'window':25B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2019-04-09T21:29:00+00:00","kev":{"dateAdded":"2022-02-15","dueDate":"2022-08-15","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Known"},"cvss_vector":"CVSS:3.1/AV:N/AC:H/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-2019-0752","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-0752","severity":null,"published_at":"2022-02-15T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T14:39:41+00:00","note":null},{"source":"epss","external_id":"CVE-2019-0752","url":"https://api.first.org/data/v1/epss?cve=CVE-2019-0752","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:44+00:00","fetched_at":"2026-10-23T19:13:44+00:00","note":null},{"source":"nvd","external_id":"CVE-2019-0752","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-0752","severity":null,"published_at":"2019-04-09T21:29:00+00:00","modified_at":"2026-08-12T05:17:19+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"}