{"id":"CVE-2023-32409","kind":"vulnerability","aliases":["CVE-2023-32409"],"related":[],"title":"The issue was addressed with improved bounds checks","description":"Apple iOS, iPadOS, macOS, tvOS, watchOS, and Safari WebKit contain an unspecified vulnerability that can allow a remote attacker to break out of the Web Content sandbox. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.\n\nCISA required action: Apply updates per vendor instructions.","summary":"A flaw in Apple's WebKit browser engine lets a remote attacker escape the Web Content sandbox on iOS, iPadOS, macOS, tvOS, watchOS and Safari. CISA reports it is being exploited in the wild, so an attacker who gets a malicious page rendered can reach beyond the browser process.","severity":"high","cvss":8.6,"epss":null,"exploited":true,"exploited_at":"2023-05-22T00:00:00+00:00","products":[{"name":"Apple Multiple Products","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"apple safari","fixed":["16.5"],"affected":"< 16.5","ecosystem":"vendor"},{"name":"apple ipados","fixed":["15.7.8"],"affected":">= 15.0, < 15.7.8","ecosystem":"vendor"},{"name":"apple ipados","fixed":["16.5"],"affected":">= 16.0, < 16.5","ecosystem":"vendor"},{"name":"apple iphone os","fixed":["15.7.8"],"affected":">= 15.0, < 15.7.8","ecosystem":"vendor"},{"name":"apple iphone os","fixed":["16.5"],"affected":">= 16.0, < 16.5","ecosystem":"vendor"},{"name":"apple macos","fixed":["13.4"],"affected":">= 13.0, < 13.4","ecosystem":"vendor"},{"name":"apple tvos","fixed":["16.5"],"affected":"< 16.5","ecosystem":"vendor"},{"name":"apple watchos","fixed":["9.5"],"affected":"< 9.5","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["apple","embedded-webkit","exploited","ios","macos","runtime","safari","webkit"],"not_affected_if":["no-apple-devices-in-fleet"],"how_to_check":null,"fix":"Apply the Apple updates for iOS, iPadOS, macOS, tvOS, watchOS and Safari per vendor instructions; the sources do not name fixed versions.\nFor non-Apple products that embed WebKit, update to a WebKit build that includes the fix; the sources do not name it.","status":"open","published_at":"2023-05-22T00:00:00+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T21:06:42+00:00","updated_at":"2026-10-23T22:29:04+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-23T21:06:42Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Apple updates for iOS, iPadOS, macOS, tvOS, watchOS and Safari per vendor instructions; the sources do not name fixed versions.\nFor non-Apple products that embed WebKit, update to a WebKit build that includes the fix; the sources do not name it.","reach":"internet","impact":"high","summary":"A flaw in Apple's WebKit browser engine lets a remote attacker escape the Web Content sandbox on iOS, iPadOS, macOS, tvOS, watchOS and Safari. CISA reports it is being exploited in the wild, so an attacker who gets a malicious page rendered can reach beyond the browser process.","category":"runtime","who_cares":["apple","ios","macos","safari","webkit","embedded-webkit"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker escapes browser sandbox and runs code outside Web Content process.","analyst_note":"Find the fixed Apple OS and Safari versions and the WebKit commit from Apple's security advisory for CVE-2023-32409 and the CISA KEV entry.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["no-apple-devices-in-fleet"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000519,"input_tokens":2872,"output_tokens":464,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2023':10A,13A '-32409':11A,14A 'action':152C 'address':4A 'allow':110C 'appl':36B,49B,95C,136C,141C 'apple':15A,18A,20A,22A,24A,27A,30A,32A,34A 'appli':153C 'attack':57B,82B,113C 'beyond':91B 'bound':7A 'break':115C 'browser':52B,93B 'check':8A 'cisa':71B,150C 'contain':104C 'content':61B,120C 'could':124C 'cve':9A,12A 'embed':38B 'embedded-webkit':37B 'engin':53B 'escap':58B 'exploit':40B,76B 'flaw':47B 'get':84B 'html':126C,148C 'impact':125C 'improv':6A 'includ':131C 'instruct':157C 'io':41B,64B,96C 'ipado':65B,97C 'ipados':21A,23A 'iphone':25A,28A 'issu':2A 'let':54B 'limit':134C 'maco':42B,66B,98C 'macos':31A 'malici':86B 'multiple':16A 'non':140C 'non-appl':139C 'os':26A,29A 'page':87B 'parser':127C 'per':155C 'process':94B,149C 'product':142C 'products':17A 'reach':90B 'reli':144C 'remot':56B,112C 'render':88B 'report':72B 'requir':151C 'runtim':43B 'safari':19A,44B,70B,102C,137C 'sandbox':62B,121C 'tvos':33A,67B,99C 'unspecifi':106C 'updat':154C 'use':129C 'vendor':156C 'vulner':107C,123C 'watcho':68B,100C 'watchos':35A 'web':60B,119C 'webkit':39B,45B,51B,103C,130C,146C 'wild':79B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2023-05-22T00:00:00+00:00","kev":{"dateAdded":"2023-05-22","dueDate":"2023-06-12","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2023-32409","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-32409","severity":null,"published_at":"2023-05-22T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T17:39:56+00:00","note":null},{"source":"nvd","external_id":"CVE-2023-32409","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-32409","severity":null,"published_at":"2023-06-23T18:15:13+00:00","modified_at":"2026-06-17T05:58:47+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"}