{"id":"CVE-2022-48503","kind":"vulnerability","aliases":["CVE-2022-48503"],"related":[],"title":"The issue was addressed with improved bounds checks","description":"Apple macOS, iOS, tvOS, Safari, and watchOS contain an unspecified vulnerability in JavaScriptCore that when processing web content may lead to arbitrary code execution. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.\n\nCISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"A flaw in Apple's JavaScriptCore engine lets specially crafted web content run arbitrary code on affected Apple devices and Safari. CISA reports it is being exploited in the wild.","severity":"high","cvss":8.8,"epss":null,"exploited":true,"exploited_at":"2025-10-20T00:00:00+00:00","products":[{"name":"Apple Multiple Products","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"apple safari","fixed":["15.6"],"affected":"< 15.6","ecosystem":"vendor"},{"name":"apple ipados","fixed":["15.6"],"affected":"< 15.6","ecosystem":"vendor"},{"name":"apple iphone os","fixed":["15.6"],"affected":"< 15.6","ecosystem":"vendor"},{"name":"apple macos","fixed":["12.5"],"affected":">= 12.0.0, < 12.5","ecosystem":"vendor"},{"name":"apple tvos","fixed":["15.6"],"affected":"< 15.6","ecosystem":"vendor"},{"name":"apple watchos","fixed":["8.7"],"affected":"< 8.7","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["apple","exploited","ios","macos","safari","vendor","web-browsing"],"not_affected_if":["fully-patched-devices"],"how_to_check":null,"fix":"Update macOS, iOS, tvOS, watchOS and Safari to a vendor release that includes the fix; if the device or OS version is end-of-life, replace it. Specific fixed versions are not in the sources.","status":"open","published_at":"2023-08-14T23:15:10+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:44:31+00:00","updated_at":"2026-10-23T23:44:51+00:00","category":"vendor","confidence":0.6,"triage":{"at":"2026-10-23T20:44:31Z","model":"claude-haiku-5-5","output":{"fix":"Update macOS, iOS, tvOS, watchOS and Safari to a vendor release that includes the fix; if the device or OS version is end-of-life, replace it. Specific fixed versions are not in the sources.","reach":"internet","summary":"A flaw in Apple's JavaScriptCore engine lets specially crafted web content run arbitrary code on affected Apple devices and Safari. CISA reports it is being exploited in the wild.","category":"vendor","who_cares":["apple","macos","ios","safari","web-browsing"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs arbitrary code on the device after the user loads malicious web content.","analyst_note":"Find Apple's security advisory for CVE-2022-48503 to get fixed OS and Safari versions and whether end-of-life devices receive no fix.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["fully-patched-devices"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000443,"input_tokens":2584,"output_tokens":369,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':127C '-2022':10A,13A '-48503':11A,14A '22':126C 'action':117C 'address':4A 'affect':56B 'and/or':104C 'appl':31B,43B,57B,70C 'apple':15A,18A,20A,22A,25A,27A,29A 'appli':118C 'applic':124C 'arbitrari':53B,91C 'bod':125C 'bound':7A 'brows':39B 'check':8A 'cisa':61B,115C 'cloud':130C 'code':54B,92C 'contain':77C 'content':51B,87C 'could':97C 'craft':49B 'cve':9A,12A 'devic':58B 'discontinu':112C,133C 'end':100C,106C 'end-of-lif':99C 'end-of-servic':105C 'engin':46B 'eo':109C 'eol':103C 'execut':93C 'exploit':32B,66B 'flaw':41B 'follow':123C 'guidanc':128C 'impact':95C 'improv':6A 'instruct':122C 'io':33B,72C 'ipados':21A 'iphone':23A 'issu':2A 'javascriptcor':45B,82C 'lead':89C 'let':47B 'life':102C 'maco':34B,71C 'macos':26A 'may':88C 'mitig':119C,139C 'multiple':16A 'os':24A 'per':120C 'process':85C 'product':96C,113C,137C 'products':17A 'report':62B 'requir':116C 'run':52B 'safari':19A,35B,60B,74C 'servic':108C,131C 'special':48B 'tvos':28A,73C 'unavail':141C 'unspecifi':79C 'use':134C 'user':110C 'util':114C 'vendor':36B,121C 'vulner':80C 'watcho':76C 'watchos':30A 'web':38B,50B,86C 'web-brows':37B 'wild':69B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2023-08-14T23:15:10+00:00","kev":{"dateAdded":"2025-10-20","dueDate":"2025-11-10","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","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-2022-48503","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-48503","severity":null,"published_at":"2025-10-20T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T11:39:14+00:00","note":null},{"source":"nvd","external_id":"CVE-2022-48503","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48503","severity":null,"published_at":"2023-08-14T23:15:10+00:00","modified_at":"2026-06-17T05:15:33+00:00","first_seen_at":"2026-10-23T23:44:51+00:00","fetched_at":"2026-10-23T23:44:51+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"}