{"id":"CVE-2019-5825","kind":"vulnerability","aliases":["CVE-2019-5825"],"related":[],"title":"Out of bounds write in JavaScript in Google Chrome prior to 73.0.3683.86 allowed a remote attacker to potentially…","description":"Google Chromium V8 Engine contains an out-of-bounds write 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 flaw in the V8 JavaScript engine used by Chromium lets an out-of-bounds write corrupt heap memory when a victim loads a crafted HTML page. An attacker can use this to run code inside the browser, and CISA lists it as actively exploited.","severity":"high","cvss":6.5,"epss":0.55925,"exploited":true,"exploited_at":"2022-06-08T00:00:00+00:00","products":[{"name":"Google Chromium V8","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"google chrome","fixed":["73.0.3683.86"],"affected":"< 73.0.3683.86","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browser-users","chromium","exploited","google-chrome","microsoft-edge","opera","runtime"],"not_affected_if":["fully-patched-browser"],"how_to_check":"Open chrome://version (or edge://version, opera://about) and compare the version to the fixed release in the vendor advisory.","fix":"Update Google Chrome, Microsoft Edge, Opera and other Chromium-based browsers to a release that includes the vendor fix, per CISA's required action.","status":"open","published_at":"2019-11-25T20:15:11+00:00","first_seen_at":"2026-10-23T19:11:52+00:00","triaged_at":"2026-10-23T21:12:49+00:00","updated_at":"2026-10-23T22:29:04+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-10-23T21:12:49Z","model":"claude-haiku-5-5","output":{"fix":"Update Google Chrome, Microsoft Edge, Opera and other Chromium-based browsers to a release that includes the vendor fix, per CISA's required action.\nunknown","reach":"internet","impact":"high","summary":"A flaw in the V8 JavaScript engine used by Chromium lets an out-of-bounds write corrupt heap memory when a victim loads a crafted HTML page. An attacker can use this to run code inside the browser, and CISA lists it as actively exploited.","category":"runtime","who_cares":["chromium","google-chrome","microsoft-edge","opera","browser-users"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code in the browser through heap corruption from a crafted page.","analyst_note":"Confirm the fixed Chromium version and the exact affected range from the Chrome Releases blog or the NVD entry for CVE-2019-5825.","how_to_check":"Open chrome://version (or edge://version, opera://about) and compare the version to the fixed release in the vendor advisory.\nunknown","needs_analyst":true,"not_affected_if":["fully-patched-browser"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000506,"input_tokens":2896,"output_tokens":432,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2019':20A,23A '-5825':21A,24A '73.0.3683.86':12A 'action':139C 'activ':87B 'affect':119C 'allow':13A,102C 'appli':140C 'attack':16A,72B,105C 'bound':3A,58B,98C 'browser':31B,81B,122C 'browser-us':30B 'chrome':9A,29A,37B,132C 'chromium':26A,33B,52B,90C,125C 'cisa':83B,137C 'code':78B 'contain':93C 'corrupt':60B,110C 'could':118C 'craft':68B,113C 'cve':19A,22A 'edg':40B,134C 'engin':49B,92C 'exploit':34B,88B,108C 'flaw':44B 'googl':8A,36B,89C,131C 'google':25A,28A 'google-chrom':35B 'heap':61B,109C 'html':69B,114C 'includ':126C 'insid':79B 'instruct':144C 'javascript':6A,48B 'let':53B 'limit':129C 'list':84B 'load':66B 'memori':62B 'microsoft':39B,133C 'microsoft-edg':38B 'multipl':120C 'opera':41B,136C 'out-of-bound':55B,95C 'page':70B,115C 'per':142C 'potenti':18A,107C 'prior':10A 'remot':15A,104C 'requir':138C 'run':77B 'runtim':42B 'updat':141C 'use':50B,74B 'user':32B 'util':124C 'v8':27A,47B,91C 'vendor':143C 'via':111C 'victim':65B 'vulner':100C,117C 'web':121C 'write':4A,59B,99C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2019-11-25T20:15:11+00:00","kev":{"dateAdded":"2022-06-08","dueDate":"2022-06-22","requiredAction":"Apply updates per vendor instructions.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2019-5825","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2019-5825","severity":null,"published_at":"2022-06-08T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:52+00:00","fetched_at":"2026-10-25T11:39:16+00:00","note":null},{"source":"epss","external_id":"CVE-2019-5825","url":"https://api.first.org/data/v1/epss?cve=CVE-2019-5825","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-23T19:13:45+00:00","fetched_at":"2026-10-23T19:13:45+00:00","note":null},{"source":"nvd","external_id":"CVE-2019-5825","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-5825","severity":null,"published_at":"2019-11-25T20:15:11+00:00","modified_at":"2026-06-17T02:38:16+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"}