{"id":"CVE-2018-4344","kind":"vulnerability","aliases":["CVE-2018-4344"],"related":[],"title":"A memory corruption issue was addressed with improved memory handling","description":"Apple iOS, macOS, tvOS, and watchOS contain a memory corruption vulnerability which can allow for code execution.\n\nCISA required action: Apply updates per vendor instructions.","summary":"Apple iOS, macOS, tvOS and watchOS contain a memory corruption flaw in a component the sources do not name. An attacker who triggers it can run code on the affected device.","severity":"critical","cvss":9.3,"epss":0.02374,"exploited":true,"exploited_at":"2022-06-27T00:00:00+00:00","products":[{"name":"Apple Multiple Products","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"apple iphone os","fixed":["12.0"],"affected":"< 12.0","ecosystem":"vendor"},{"name":"apple mac os x","fixed":["10.14"],"affected":"< 10.14","ecosystem":"vendor"},{"name":"apple tvos","fixed":["12.0"],"affected":"< 12.0","ecosystem":"vendor"},{"name":"apple watchos","fixed":["5.0"],"affected":"< 5.0","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["apple-devices","exploited","ios","macos","tvos","vendor","watchos"],"not_affected_if":["fully-patched-devices"],"how_to_check":"Check the installed OS version on each Apple device (Settings > General > About on iOS, Apple menu > About This Mac on macOS) and compare it to the patched releases in Apple's security notes.","fix":"Update iOS, macOS, tvOS and watchOS to the current release from Apple, as CISA's required action directs.","status":"open","published_at":"2019-04-03T18:29:09+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:12:33+00:00","updated_at":"2026-10-23T22:29:04+00:00","category":"vendor","confidence":0.5,"triage":{"at":"2026-10-23T21:12:33Z","model":"claude-haiku-5-5","output":{"fix":"Update iOS, macOS, tvOS and watchOS to the current release from Apple, as CISA's required action directs.\nunknown","reach":"unknown","impact":"high","summary":"Apple iOS, macOS, tvOS and watchOS contain a memory corruption flaw in a component the sources do not name. An attacker who triggers it can run code on the affected device.","category":"vendor","who_cares":["ios","macos","tvos","watchos","apple-devices"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Attacker runs code on the device through a memory corruption flaw.","analyst_note":"Sources give no affected or fixed versions and no trigger vector; find Apple's 2018 security notes for CVE-2018-4344 and confirm the patched versions and attack vector.","how_to_check":"Check the installed OS version on each Apple device (Settings > General > About on iOS, Apple menu > About This Mac on macOS) and compare it to the patched releases in Apple's security notes.\nunknown","needs_analyst":true,"not_affected_if":["fully-patched-devices"],"user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000492,"input_tokens":2823,"output_tokens":420,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2018':12A,15A '-4344':13A,16A 'action':90C 'address':6A 'affect':69B 'allow':84C 'appl':32B,40B,71C 'apple':17A,20A,23A,27A,29A 'apple-devic':31B 'appli':91C 'attack':60B 'cisa':88C 'code':66B,86C 'compon':53B 'contain':46B,77C 'corrupt':3A,49B,80C 'cve':11A,14A 'devic':33B,70B 'execut':87C 'exploit':34B 'flaw':50B 'handl':10A 'improv':8A 'instruct':95C 'io':35B,41B,72C 'iphone':21A 'issu':4A 'mac':24A 'maco':36B,42B,73C 'memori':2A,9A,48B,79C 'multiple':18A 'name':58B 'os':22A,25A 'per':93C 'products':19A 'requir':89C 'run':65B 'sourc':55B 'trigger':62B 'tvos':28A,37B,43B,74C 'updat':92C 'vendor':38B,94C 'vulner':81C 'watcho':39B,45B,76C 'watchos':30A 'x':26A","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2019-04-03T18:29:09+00:00","kev":{"dateAdded":"2022-06-27","dueDate":"2022-07-18","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:L/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-2018-4344","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2018-4344","severity":null,"published_at":"2022-06-27T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T19:35:23+00:00","note":null},{"source":"epss","external_id":"CVE-2018-4344","url":"https://api.first.org/data/v1/epss?cve=CVE-2018-4344","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-2018-4344","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-4344","severity":null,"published_at":"2019-04-03T18:29:09+00:00","modified_at":"2026-06-17T01:58:49+00:00","first_seen_at":"2026-10-23T22:29:04+00:00","fetched_at":"2026-10-23T22:29:04+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"}