{"id":"CVE-2017-0149","kind":"vulnerability","aliases":["CVE-2017-0149"],"related":[],"title":"Microsoft Internet Explorer: Microsoft Internet Explorer Memory Corruption Vulnerability","description":"Microsoft Internet Explorer 9 through 11 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka \"Internet Explorer Memory Corruption Vulnerability.\" This vulnerability is different from those described in CVE-2017-0018 and CVE-2017-0037.","summary":"Microsoft Internet Explorer has a memory corruption flaw that lets a remote attacker run code or crash the browser using a crafted website. CISA lists it as actively exploited in the wild.","severity":"high","cvss":8.8,"epss":0.29178,"exploited":true,"exploited_at":"2022-05-24T00:00:00+00:00","products":[{"name":"Microsoft Internet Explorer","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","internet-explorer","other","windows"],"not_affected_if":["no-ie-installed"],"how_to_check":null,"fix":"Apply the Microsoft updates for Internet Explorer per vendor instructions, as CISA requires; the specific patch numbers are not in the sources.","status":"open","published_at":"2017-03-17T00:59:04+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:15:50+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"other","confidence":0.6,"triage":{"at":"2026-10-23T21:15:50Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft updates for Internet Explorer per vendor instructions, as CISA requires; the specific patch numbers are not in the sources.","reach":"internet","impact":"high","summary":"Microsoft Internet Explorer has a memory corruption flaw that lets a remote attacker run code or crash the browser using a crafted website. CISA lists it as actively exploited in the wild.","category":"other","who_cares":["internet-explorer","windows"],"confidence":0.6,"needs_auth":"no","worst_case":"attacker runs code on the visiting user's machine via a crafted website","analyst_note":"Confirm the patched IE and Windows update identifiers and how to detect IE presence and patch level via the Microsoft security advisory for CVE-2017-0149.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["no-ie-installed"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000455,"input_tokens":2848,"output_tokens":341,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-0018':99C '-0037':103C '-0149':12A,15A '-2017':11A,14A,98C,102C '11':62C '9':60C 'activ':52B 'aka':83C 'allow':63C 'arbitrari':68C 'attack':37B,65C 'browser':43B 'caus':71C 'cisa':48B 'code':39B,69C 'corrupt':8A,31B,77C,87C 'craft':46B,80C 'crash':41B 'cve':10A,13A,97C,101C 'denial':73C 'describ':95C 'differ':92C 'execut':67C 'exploit':19B,53B 'explor':3A,6A,22B,27B,59C,85C 'explorer':18A 'flaw':32B 'internet':2A,5A,17A,21B,26B,58C,84C 'internet-explor':20B 'let':34B 'list':49B 'memori':7A,30B,76C,86C 'microsoft':1A,4A,16A,25B,57C 'remot':36B,64C 'run':38B 'servic':75C 'site':82C 'use':44B 'via':78C 'vulner':9A,88C,90C 'web':81C 'websit':47B 'wild':56B 'window':24B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2017-03-17T00:59:04+00:00","kev":{"dateAdded":"2022-05-24","dueDate":"2022-06-14","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-2017-0149","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-0149","severity":null,"published_at":"2022-05-24T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T13:39:31+00:00","note":null},{"source":"epss","external_id":"CVE-2017-0149","url":"https://api.first.org/data/v1/epss?cve=CVE-2017-0149","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-2017-0149","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-0149","severity":null,"published_at":"2017-03-17T00:59:04+00:00","modified_at":"2026-06-17T00:57:10+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"}