{"id":"CVE-2023-4762","kind":"vulnerability","aliases":["CVE-2023-4762"],"related":[],"title":"Type Confusion in V8 in Google Chrome prior to 116.0.5845.179 allowed a remote attacker to execute arbitrary code…","description":"Google Chromium V8 contains a type confusion vulnerability that allows a remote attacker to execute code 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 mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","summary":"A type confusion bug in Chromium's V8 JavaScript engine lets a remote attacker run code by getting a user to open a crafted HTML page. It is listed as actively exploited in the wild and affects Chromium-based browsers such as Chrome, Edge and Opera.","severity":"critical","cvss":8.8,"epss":null,"exploited":true,"exploited_at":"2024-02-06T00:00:00+00:00","products":[{"name":"Google Chromium V8","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"google chrome","fixed":["116.0.5845.179"],"affected":"< 116.0.5845.179","ecosystem":"vendor"},{"name":"debian linux","fixed":[],"affected":"= 11.0","ecosystem":"vendor"},{"name":"debian linux","fixed":[],"affected":"= 12.0","ecosystem":"vendor"},{"name":"fedoraproject fedora","fixed":[],"affected":"= 37","ecosystem":"vendor"},{"name":"fedoraproject fedora","fixed":[],"affected":"= 38","ecosystem":"vendor"},{"name":"fedoraproject fedora","fixed":[],"affected":"= 39","ecosystem":"vendor"},{"name":"microsoft edge chromium","fixed":["116.0.1938.76"],"affected":"< 116.0.1938.76","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browsers","chrome","chromium","edge","exploited","opera","vendor"],"not_affected_if":["non-chromium-browsers"],"how_to_check":"Open the browser's version page (chrome://version or edge://version) and compare the version against the vendor's fixed release.","fix":"Update the browser to the patched Chromium release from the vendor; the exact fixed version is not in the sources.\nDiscontinue use of the affected browser if no update is available, as CISA requires.","status":"open","published_at":"2023-09-05T22:15:09+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T21:02:23+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"vendor","confidence":0.8,"triage":{"at":"2026-10-23T21:02:23Z","model":"claude-haiku-5-5","output":{"fix":"Update the browser to the patched Chromium release from the vendor; the exact fixed version is not in the sources.\nDiscontinue use of the affected browser if no update is available, as CISA requires.","reach":"internet","impact":"high","summary":"A type confusion bug in Chromium's V8 JavaScript engine lets a remote attacker run code by getting a user to open a crafted HTML page. It is listed as actively exploited in the wild and affects Chromium-based browsers such as Chrome, Edge and Opera.","category":"vendor","who_cares":["chrome","edge","opera","chromium","browsers"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker runs code in the browser after a victim opens a crafted page.","analyst_note":"Find the fixed Chromium version and patched browser builds from the Chrome Releases blog and the CISA KEV entry for CVE-2023-4762.","how_to_check":"Open the browser's version page (chrome://version or edge://version) and compare the version against the vendor's fixed release.\nunknown","needs_analyst":true,"not_affected_if":["non-chromium-browsers"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"critical"},"cost_usd":0.000501,"input_tokens":2857,"output_tokens":431,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2023':20A,23A '-4762':21A,24A '116.0.5845.179':10A 'action':141C 'activ':80B 'affect':86B,121C 'allow':11A,106C 'appli':142C 'arbitrari':17A 'attack':14A,63B,109C 'base':89B 'browser':43B,90B,124C 'bug':53B 'chrome':7A,29A,44B,93B,134C 'chromium':26A,42A,45B,55B,88B,98C,127C 'chromium-bas':87B 'cisa':139C 'code':18A,65B,112C 'confus':2A,52B,103C 'contain':100C 'could':120C 'craft':73B,115C 'cve':19A,22A 'debian':30A,32A 'discontinu':148C 'edg':46B,94B,136C 'edge':41A 'engin':59B 'execut':16A,111C 'exploit':47B,81B 'fedora':35A,37A,39A 'fedoraproject':34A,36A,38A 'get':67B 'googl':6A,97C,133C 'google':25A,28A 'html':74B,116C 'includ':128C 'instruct':146C 'javascript':58B 'let':60B 'limit':131C 'linux':31A,33A 'list':78B 'microsoft':40A,135C 'mitig':143C,154C 'multipl':122C 'open':71B 'opera':48B,96B,138C 'page':75B,117C 'per':144C 'prior':8A 'product':152C 'remot':13A,62B,108C 'requir':140C 'run':64B 'type':1A,51B,102C 'unavail':156C 'use':149C 'user':69B 'util':126C 'v8':4A,27A,57B,99C 'vendor':49B,145C 'via':113C 'vulner':104C,119C 'web':123C 'wild':84B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2023-09-05T22:15:09+00:00","kev":{"dateAdded":"2024-02-06","dueDate":"2024-02-27","requiredAction":"Apply mitigations per vendor instructions 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-2023-4762","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2023-4762","severity":null,"published_at":"2024-02-06T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T16:39:47+00:00","note":null},{"source":"nvd","external_id":"CVE-2023-4762","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-4762","severity":null,"published_at":"2023-09-05T22:15:09+00:00","modified_at":"2026-06-17T06:38:32+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+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"}