{"id":"CVE-2020-6418","kind":"vulnerability","aliases":["CVE-2020-6418"],"related":[],"title":"Google Chromium V8: Google Chromium V8 Type Confusion Vulnerability","description":"Google Chromium V8 Engine contains a type confusion vulnerability 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 crafted HTML page corrupt heap memory. An attacker who gets a victim to load the page can potentially run code in the browser.","severity":"high","cvss":8.8,"epss":0.78808,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Google Chromium V8","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browsers","chromium","exploited","google-chrome","microsoft-edge","opera","runtime"],"not_affected_if":["up-to-date-browser"],"how_to_check":"Open the browser's version page (chrome://version or edge://version) and compare against the fixed release in the vendor advisory.","fix":"Update Google Chrome, Microsoft Edge, Opera or other Chromium-based browsers to a patched release per vendor instructions.","status":"open","published_at":"2020-02-27T23:15:12+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:39:34+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-23T21:39:34Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome, Microsoft Edge, Opera or other Chromium-based browsers to a patched release per vendor instructions.\nunknown","reach":"internet","impact":"high","summary":"A type confusion bug in the V8 JavaScript engine used by Chromium lets a crafted HTML page corrupt heap memory. An attacker who gets a victim to load the page can potentially run code in the browser.","category":"runtime","who_cares":["chromium","google-chrome","microsoft-edge","opera","browsers"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code in the browser via a malicious web page","analyst_note":"Confirm the fixed Chrome/Edge/Opera version numbers from the Chrome Releases blog and the CISA KEV entry; sources gave no affected or fixed versions.","how_to_check":"Open the browser's version page (chrome://version or edge://version) and compare against the fixed release in the vendor advisory.\nunknown","needs_analyst":true,"not_affected_if":["up-to-date-browser"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000494,"input_tokens":2886,"output_tokens":410,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2020':11A,14A '-6418':12A,15A 'action':113C 'affect':93C 'allow':76C 'appli':114C 'attack':51B,79C 'browser':19B,66B,96C 'bug':33B 'chrome':24B,106C 'chromium':2A,5A,17A,20B,41B,68C,99C 'cisa':111C 'code':63B 'confus':8A,32B,74C 'contain':71C 'corrupt':47B,84C 'could':92C 'craft':44B,87C 'cve':10A,13A 'edg':27B,108C 'engin':38B,70C 'exploit':21B,82C 'get':53B 'googl':1A,4A,23B,67C,105C 'google':16A 'google-chrom':22B 'heap':48B,83C 'html':45B,88C 'includ':100C 'instruct':118C 'javascript':37B 'let':42B 'limit':103C 'load':57B 'memori':49B 'microsoft':26B,107C 'microsoft-edg':25B 'multipl':94C 'opera':28B,110C 'page':46B,59B,89C 'per':116C 'potenti':61B,81C 'remot':78C 'requir':112C 'run':62B 'runtim':29B 'type':7A,31B,73C 'updat':115C 'use':39B 'util':98C 'v8':3A,6A,18A,36B,69C 'vendor':117C 'via':85C 'victim':55B 'vulner':9A,75C,91C 'web':95C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2020-02-27T23:15:12+00:00","kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","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-2020-6418","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-6418","severity":null,"published_at":"2021-11-03T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:53+00:00","fetched_at":"2026-10-25T12:39:25+00:00","note":null},{"source":"epss","external_id":"CVE-2020-6418","url":"https://api.first.org/data/v1/epss?cve=CVE-2020-6418","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:44+00:00","fetched_at":"2026-10-23T19:13:44+00:00","note":null},{"source":"nvd","external_id":"CVE-2020-6418","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-6418","severity":null,"published_at":"2020-02-27T23:15:12+00:00","modified_at":"2026-06-17T03:23:18+00:00","first_seen_at":"2026-10-23T21:57:35+00:00","fetched_at":"2026-10-23T21:57:35+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"}