{"id":"CVE-2022-4262","kind":"vulnerability","aliases":["CVE-2022-4262"],"related":[],"title":"Type confusion in V8 in Google Chrome prior to 108.0.5359.94 allowed a remote attacker to potentially exploit heap…","description":"Google Chromium V8 Engine contains a type confusion vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.\n\nCISA required action: Apply updates per vendor instructions.","summary":"A type confusion bug in the V8 JavaScript engine used by Chromium lets a remote attacker corrupt heap memory by serving a crafted HTML page. Exploitation in the wild is confirmed by CISA's KEV catalog, and an attacker gets code execution in the browser process context.","severity":"high","cvss":8.8,"epss":null,"exploited":true,"exploited_at":"2022-12-05T00:00:00+00:00","products":[{"name":"Google Chromium V8","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"google chrome","fixed":["108.0.5359.94"],"affected":"< 108.0.5359.94","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browsers","chrome","chromium","edge","exploited","opera","runtime"],"not_affected_if":["already-patched-browser"],"how_to_check":"Open chrome://version (or edge://version, opera://about) and compare the version against the fixed release in the vendor advisory.","fix":"Update Google Chrome, Microsoft Edge, Opera or other Chromium-based browsers to the vendor's patched release.\nCISA required action: apply updates per vendor instructions.","status":"open","published_at":"2022-12-02T21:15:12+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:08:54+00:00","updated_at":"2026-10-23T22:29:04+00:00","category":"runtime","confidence":0.8,"triage":{"at":"2026-10-23T21:08:54Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome, Microsoft Edge, Opera or other Chromium-based browsers to the vendor's patched release.\nCISA required action: apply updates per vendor instructions.","reach":"internet","impact":"high","summary":"A type confusion bug in the V8 JavaScript engine used by Chromium lets a remote attacker corrupt heap memory by serving a crafted HTML page. Exploitation in the wild is confirmed by CISA's KEV catalog, and an attacker gets code execution in the browser process context.","category":"runtime","who_cares":["chrome","edge","opera","chromium","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs arbitrary code in the browser after the victim visits a page.","analyst_note":"Sources do not give affected or fixed version numbers; check the Chrome Releases blog and the CISA KEV entry for the patched build.","how_to_check":"Open chrome://version (or edge://version, opera://about) and compare the version against the fixed release in the vendor advisory.\nunknown\nunknown","needs_analyst":true,"not_affected_if":["already-patched-browser"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000504,"input_tokens":2847,"output_tokens":438,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2022':20A,23A '-4262':21A,24A '108.0.5359.94':10A 'action':131C 'affect':111C 'allow':11A,94C 'appli':132C 'attack':14A,52B,75B,97C 'browser':30B,81B,114C 'bug':40B 'catalog':72B 'chrome':7A,29A,31B,124C 'chromium':26A,32B,48B,85C,117C 'cisa':69B,129C 'code':77B 'confirm':67B 'confus':2A,39B,91C 'contain':88C 'context':83B 'corrupt':53B,102C 'could':110C 'craft':59B,105C 'cve':19A,22A 'edg':33B,126C 'engin':45B,87C 'execut':78B 'exploit':17A,34B,62B,100C 'get':76B 'googl':6A,84C,123C 'google':25A,28A 'heap':18A,54B,101C 'html':60B,106C 'includ':118C 'instruct':136C 'javascript':44B 'kev':71B 'let':49B 'limit':121C 'memori':55B 'microsoft':125C 'multipl':112C 'opera':35B,128C 'page':61B,107C 'per':134C 'potenti':16A,99C 'prior':8A 'process':82B 'remot':13A,51B,96C 'requir':130C 'runtim':36B 'serv':57B 'type':1A,38B,90C 'updat':133C 'use':46B 'util':116C 'v8':4A,27A,43B,86C 'vendor':135C 'via':103C 'vulner':92C,109C 'web':113C 'wild':65B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2022-12-02T21:15:12+00:00","kev":{"dateAdded":"2022-12-05","dueDate":"2022-12-26","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-2022-4262","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2022-4262","severity":null,"published_at":"2022-12-05T00:00:00+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":"nvd","external_id":"CVE-2022-4262","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-4262","severity":null,"published_at":"2022-12-02T21:15:12+00:00","modified_at":"2026-06-17T05:20:25+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"}