{"id":"CVE-2014-4123","kind":"vulnerability","aliases":["CVE-2014-4123"],"related":[],"title":"Microsoft Internet Explorer: Microsoft Internet Explorer Privilege Escalation Vulnerability","description":"Microsoft Internet Explorer 7 through 11 allows remote attackers to gain privileges via a crafted web site, aka \"Internet Explorer Elevation of Privilege Vulnerability,\" as exploited in the wild in October 2014, a different vulnerability than CVE-2014-4124.","summary":"Microsoft Internet Explorer contains an unspecified flaw that lets a remote attacker gain privileges by luring a user to a crafted web site. It is listed in CISA's Known Exploited Vulnerabilities catalog, so attacks have been observed in the wild.","severity":"high","cvss":8.8,"epss":0.47133,"exploited":true,"exploited_at":"2022-05-25T00:00:00+00:00","products":[{"name":"Microsoft Internet Explorer","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","infrastructure","internet-explorer","windows"],"not_affected_if":["internet-explorer-removed","patched-windows"],"how_to_check":null,"fix":"Apply the Microsoft update for this CVE per vendor instructions (CISA required action). Exact KB or patched build: unknown.","status":"open","published_at":"2014-10-15T10:55:08+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:15:38+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T21:15:38Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft update for this CVE per vendor instructions (CISA required action). Exact KB or patched build: unknown.","reach":"internet","impact":"high","summary":"Microsoft Internet Explorer contains an unspecified flaw that lets a remote attacker gain privileges by luring a user to a crafted web site. It is listed in CISA's Known Exploited Vulnerabilities catalog, so attacks have been observed in the wild.","category":"infrastructure","who_cares":["windows","internet-explorer"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker gains elevated privileges on the visiting user's machine via a crafted site","analyst_note":"Find the Microsoft security bulletin for CVE-2014-4123 to get affected IE versions, patched builds and KB numbers, via https://msrc.microsoft.com or the CISA KEV entry.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["internet-explorer-removed","patched-windows"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000481,"input_tokens":2836,"output_tokens":394,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2014':11A,14A,103C '-4123':12A,15A '-4124':104C '11':71C '2014':97C '7':69C 'aka':83C 'allow':72C 'attack':36B,59B,74C 'catalog':57B 'cisa':52B 'contain':28B 'craft':45B,80C 'cve':10A,13A,102C 'differ':99C 'elev':86C 'escal':8A 'exploit':19B,55B,91C 'explor':3A,6A,23B,27B,68C,85C 'explorer':18A 'flaw':31B 'gain':37B,76C 'infrastructur':20B 'internet':2A,5A,17A,22B,26B,67C,84C 'internet-explor':21B 'known':54B 'let':33B 'list':50B 'lure':40B 'microsoft':1A,4A,16A,25B,66C 'observ':62B 'octob':96C 'privileg':7A,38B,77C,88C 'remot':35B,73C 'site':47B,82C 'unspecifi':30B 'user':42B 'via':78C 'vulner':9A,56B,89C,100C 'web':46B,81C 'wild':65B,94C 'window':24B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2014-10-15T10:55:08+00:00","kev":{"dateAdded":"2022-05-25","dueDate":"2022-06-15","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-2014-4123","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2014-4123","severity":null,"published_at":"2022-05-25T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T10:39:06+00:00","note":null},{"source":"epss","external_id":"CVE-2014-4123","url":"https://api.first.org/data/v1/epss?cve=CVE-2014-4123","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-2014-4123","url":"https://nvd.nist.gov/vuln/detail/CVE-2014-4123","severity":null,"published_at":"2014-10-15T10:55:08+00:00","modified_at":"2026-06-17T00:09:28+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"}