{"id":"CVE-2020-16017","kind":"vulnerability","aliases":["CVE-2020-16017"],"related":[],"title":"Google Chrome: Google Chrome Use-After-Free Vulnerability","description":"Google Chrome contains a use-after-free vulnerability that allows a remote attacker, who has compromised the renderer process, to potentially perform a sandbox escape via a crafted HTML page.\n\nCISA required action: Apply updates per vendor instructions.","summary":"Google Chrome has a use-after-free bug in its code that lets a remote attacker who already controls the renderer process escape the browser sandbox via a crafted HTML page. CISA lists it as actively exploited in the wild.","severity":"critical","cvss":9.6,"epss":0.0273,"exploited":true,"exploited_at":"2021-11-03T00:00:00+00:00","products":[{"name":"Google Chrome","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browsers","chrome","exploited","linux","macos","runtime","windows"],"not_affected_if":["chrome-fully-updated"],"how_to_check":"Open chrome://version and compare the version against the fixed release listed in Google's security advisory; unknown for the exact fixed version in the sources.","fix":"Update Google Chrome to a release at or after the fix Google published for CVE-2020-16017, per vendor instructions (CISA required action: apply updates).","status":"open","published_at":"2021-01-08T19:15:12+00:00","first_seen_at":"2026-10-23T19:11:53+00:00","triaged_at":"2026-10-23T21:39:50+00:00","updated_at":"2026-10-23T21:57:35+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-23T21:39:50Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome to a release at or after the fix Google published for CVE-2020-16017, per vendor instructions (CISA required action: apply updates).","reach":"internet","impact":"high","summary":"Google Chrome has a use-after-free bug in its code that lets a remote attacker who already controls the renderer process escape the browser sandbox via a crafted HTML page. CISA lists it as actively exploited in the wild.","category":"runtime","who_cares":["chrome","browsers","windows","macos","linux"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker escapes renderer sandbox and runs code on the victim's machine.","analyst_note":"Confirm the fixed Chrome version and affected range from Google's Chrome Releases blog or the CVE-2020-16017 entry; sources did not give versions.","how_to_check":"Open chrome://version and compare the version against the fixed release listed in Google's security advisory; unknown for the exact fixed version in the sources.","needs_analyst":true,"not_affected_if":["chrome-fully-updated"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000488,"input_tokens":2834,"output_tokens":409,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-16017':12A,15A '-2020':11A,14A 'action':99C 'activ':61B 'allow':76C 'alreadi':43B 'appli':100C 'attack':41B,79C 'browser':18B,50B 'bug':33B 'chrome':2A,4A,17A,19B,26B,67C 'cisa':57B,97C 'code':36B 'compromis':82C 'contain':68C 'control':44B 'craft':54B,94C 'cve':10A,13A 'escap':48B,91C 'exploit':20B,62B 'free':8A,32B,73C 'googl':1A,3A,25B,66C 'google':16A 'html':55B,95C 'instruct':104C 'let':38B 'linux':21B 'list':58B 'maco':22B 'page':56B,96C 'per':102C 'perform':88C 'potenti':87C 'process':47B,85C 'remot':40B,78C 'render':46B,84C 'requir':98C 'runtim':23B 'sandbox':51B,90C 'updat':101C 'use':6A,30B,71C 'use-after-fre':5A,29B,70C 'vendor':103C 'via':52B,92C 'vulner':9A,74C 'wild':65B 'window':24B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2021-01-08T19:15:12+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:C/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2020-16017","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-16017","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":"2026-10-25T15:39:44+00:00","note":null},{"source":"epss","external_id":"CVE-2020-16017","url":"https://api.first.org/data/v1/epss?cve=CVE-2020-16017","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-2020-16017","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16017","severity":null,"published_at":"2021-01-08T19:15:12+00:00","modified_at":"2026-06-17T02:57:38+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"}