{"id":"CVE-2020-16009","kind":"vulnerability","aliases":["CVE-2020-16009"],"related":[],"title":"Google Chromium V8: Google Chromium V8 Type Confusion Vulnerability","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 Chromium V8 JavaScript engine lets a crafted HTML page corrupt heap memory in the browser. An attacker who gets a victim to load the page can potentially run code in the browser process context.","severity":"high","cvss":8.8,"epss":0.48293,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Google Chromium V8","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browsers","chrome","chromium","edge","exploited","opera","runtime"],"not_affected_if":["fully-patched-browser"],"how_to_check":"Open the browser's version page (chrome://version or edge://version) and compare against the fixed version in the vendor advisory.","fix":"Update Chrome, Edge, Opera or other Chromium-based browsers to a release that includes the vendor's fix; CISA says to apply updates per vendor instructions.","status":"open","published_at":"2020-11-03T03:15:15+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:39:38+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-23T21:39:38Z","model":"claude-haiku-5-5","output":{"fix":"Update Chrome, Edge, Opera or other Chromium-based browsers to a release that includes the vendor's fix; CISA says to apply updates per vendor instructions.\nunknown","reach":"internet","impact":"high","summary":"A type confusion bug in the Chromium V8 JavaScript engine lets a crafted HTML page corrupt heap memory in the browser. An attacker who gets a victim to load the page can potentially run code in the browser process context.","category":"runtime","who_cares":["chromium","chrome","edge","opera","browsers"],"confidence":0.6,"needs_auth":"no","worst_case":"Attacker runs code via heap corruption after victim visits a page.","analyst_note":"Confirm the fixed Chromium version and advisory link from the vendor; sources here do not name a fixed build.","how_to_check":"Open the browser's version page (chrome://version or edge://version) and compare against the fixed version in the vendor advisory.\nunknown\nunknown","needs_analyst":true,"not_affected_if":["fully-patched-browser"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.00049,"input_tokens":2887,"output_tokens":402,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-16009':12A,15A '-2020':11A,14A 'action':113C 'affect':93C 'allow':76C 'appli':114C 'attack':48B,79C 'browser':19B,46B,63B,96C 'bug':29B 'chrome':20B,106C 'chromium':2A,5A,17A,21B,32B,67C,99C 'cisa':111C 'code':60B 'confus':8A,28B,73C 'contain':70C 'context':65B 'corrupt':41B,84C 'could':92C 'craft':38B,87C 'cve':10A,13A 'edg':22B,108C 'engin':35B,69C 'exploit':23B,82C 'get':50B 'googl':1A,4A,66C,105C 'google':16A 'heap':42B,83C 'html':39B,88C 'includ':100C 'instruct':118C 'javascript':34B 'let':36B 'limit':103C 'load':54B 'memori':43B 'microsoft':107C 'multipl':94C 'opera':24B,110C 'page':40B,56B,89C 'per':116C 'potenti':58B,81C 'process':64B 'remot':78C 'requir':112C 'run':59B 'runtim':25B 'type':7A,27B,72C 'updat':115C 'util':98C 'v8':3A,6A,18A,33B,68C 'vendor':117C 'via':85C 'victim':52B 'vulner':9A,74C,91C 'web':95C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2020-11-03T03:15:15+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-2020-16009","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-16009","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":"2026-10-25T11:39:18+00:00","note":null},{"source":"epss","external_id":"CVE-2020-16009","url":"https://api.first.org/data/v1/epss?cve=CVE-2020-16009","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-2020-16009","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16009","severity":null,"published_at":"2020-11-03T03:15:15+00:00","modified_at":"2026-06-17T02:57:37+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"}