{"id":"CVE-2025-5419","kind":"vulnerability","aliases":["CVE-2025-5419"],"related":[],"title":"Out of bounds read and write in V8 in Google Chrome prior to 137.0.7151.68 allowed a remote attacker to potentially…","description":"Google Chromium V8 contains an out-of-bounds read and write vulnerability that could allow 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 mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"A flaw in the V8 JavaScript engine used by Chromium lets a crafted web page read and write outside the bounds of a buffer, which can corrupt heap memory. An attacker who gets a victim to open the page can potentially run code in the browser.","severity":"high","cvss":8.8,"epss":null,"exploited":true,"exploited_at":"2025-06-05T00:00:00+00:00","products":[{"name":"Google Chromium V8","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"google chrome","fixed":["137.0.7151.68"],"affected":"< 137.0.7151.68","ecosystem":"vendor"},{"name":"microsoft edge chromium","fixed":["137.0.3296.62"],"affected":"< 137.0.3296.62","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["browsers","chrome","chromium","edge","exploited","opera","other"],"not_affected_if":["browser-already-updated"],"how_to_check":"Open chrome://version (or edge://version) and compare the Chromium version against 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.\nApply the vendor mitigations; CISA says to discontinue use of the product if mitigations are unavailable.","status":"open","published_at":"2025-06-03T00:15:21+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:46:59+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-23T20:46:59Z","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.\nApply the vendor mitigations; CISA says to discontinue use of the product if mitigations are unavailable.","reach":"internet","summary":"A flaw in the V8 JavaScript engine used by Chromium lets a crafted web page read and write outside the bounds of a buffer, which can corrupt heap memory. An attacker who gets a victim to open the page can potentially run code in the browser.","category":"other","who_cares":["chrome","edge","opera","chromium","browsers"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker runs code in the browser after a victim opens a crafted page.","analyst_note":"Fixed Chromium version and vendor advisory link are not in the sources; check the Chrome Releases blog and the CISA KEV entry for the exact patched build and due date.","how_to_check":"Open chrome://version (or edge://version) and compare the Chromium version against the fixed release in the vendor advisory.\nunknown","needs_analyst":true,"not_affected_if":["browser-already-updated"],"user_interaction":"yes","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000479,"input_tokens":2598,"output_tokens":439,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':149C '-2025':22A,25A '-5419':23A,26A '137.0.7151.68':14A '22':148C 'action':139C 'affect':119C 'allow':15A,102C 'appli':140C 'applic':146C 'attack':18A,71B,105C 'bod':147C 'bound':3A,61B,95C 'browser':35B,86B,122C 'buffer':64B 'chrome':11A,31A,36B,132C 'chromium':28A,34A,37B,50B,88C,125C 'cisa':137C 'cloud':152C 'code':83B 'contain':90C 'corrupt':67B,110C 'could':101C,118C 'craft':53B,113C 'cve':21A,24A 'discontinu':155C 'edg':38B,134C 'edge':33A 'engin':47B 'exploit':39B,108C 'flaw':42B 'follow':145C 'get':73B 'googl':10A,87C,131C 'google':27A,30A 'guidanc':150C 'heap':68B,109C 'html':114C 'includ':126C 'instruct':144C 'javascript':46B 'let':51B 'limit':129C 'memori':69B 'microsoft':32A,133C 'mitig':141C,161C 'multipl':120C 'open':77B 'opera':40B,136C 'out-of-bound':92C 'outsid':59B 'page':55B,79B,115C 'per':142C 'potenti':20A,81B,107C 'prior':12A 'product':159C 'read':4A,56B,96C 'remot':17A,104C 'requir':138C 'run':82B 'servic':153C 'unavail':163C 'use':48B,156C 'util':124C 'v8':8A,29A,45B,89C 'vendor':143C 'via':111C 'victim':75B 'vulner':99C,117C 'web':54B,121C 'write':6A,58B,98C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2025-06-03T00:15:21+00:00","kev":{"dateAdded":"2025-06-05","dueDate":"2025-06-26","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, 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":"134c704f-9b21-4f2e-91b3-4a467353bcc0","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2025-5419","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2025-5419","severity":null,"published_at":"2025-06-05T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T10:39:05+00:00","note":null},{"source":"nvd","external_id":"CVE-2025-5419","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5419","severity":null,"published_at":"2025-06-03T00:15:21+00:00","modified_at":"2026-06-17T09:47:52+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"}