{"id":"CVE-2026-121247","kind":"vulnerability","aliases":["CVE-2026-121247"],"related":[],"title":"Chrome on Android: Dawn buffer overflow lets a web page run code","description":"Buffer overflow in Dawn in Google Chrome on on Android prior to 157.0.8103.38 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)","summary":"A buffer overflow in Dawn, the WebGPU graphics component of Google Chrome on Android, lets a crafted HTML page trigger memory corruption. A remote attacker could potentially execute arbitrary code outside the browser sandbox.","severity":"critical","cvss":null,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["android","chrome","dawn","runtime","webgpu"],"not_affected_if":["chrome-updated","desktop-only"],"how_to_check":"- Open Chrome on Android and check the version under Settings > About Chrome\n- Confirm the installed version is at or above `157.0.8103.38`","fix":"- Chrome on Android: move to `157.0.8103.38` or later","status":"open","published_at":"2026-11-03T21:17:35+00:00","first_seen_at":"2026-11-03T21:19:29+00:00","triaged_at":"2026-11-03T21:21:03+00:00","updated_at":"2026-11-03T21:21:03+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-11-03T21:21:03Z","model":"claude-haiku-5-5","output":{"fix":"- Chrome on Android: move to `157.0.8103.38` or later","reach":"internet","title":"Chrome on Android: Dawn buffer overflow lets a web page run code","impact":"high","summary":"A buffer overflow in Dawn, the WebGPU graphics component of Google Chrome on Android, lets a crafted HTML page trigger memory corruption. A remote attacker could potentially execute arbitrary code outside the browser sandbox.","audience":"everyone","category":"runtime","nicknames":[],"who_cares":["chrome","android","webgpu","dawn"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Arbitrary code runs outside the browser sandbox after visiting a page","analyst_note":"Confirm the affected desktop Chrome versions and whether WebGPU must be enabled for exploitation, using the Chrome release notes.","how_to_check":"- Open Chrome on Android and check the version under Settings > About Chrome\n- Confirm the installed version is at or above `157.0.8103.38`","plain_action":"Update Chrome on your Android phone to version 157.0.8103.38 or later through the Play Store.","needs_analyst":true,"not_affected_if":["chrome-updated","desktop-only"],"who_is_affected":"Android devices running Chrome older than 157.0.8103.38 are exposed when a user opens a crafted web page. Desktop Chrome and other browsers are not named in the sources. Users who keep Chrome updated are not affected.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000694,"input_tokens":4114,"output_tokens":565,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-121247':15A,18A '-2026':14A,17A '157.0.8103.38':70C 'allow':71C 'android':3A,19B,37B,67C 'arbitrari':52B,78C 'attack':48B,74C 'browser':56B 'buffer':5A,25B,58C 'chrome':1A,20B,35B,64C 'chromium':88C 'code':12A,53B,79C 'compon':32B 'corrupt':45B 'could':49B 'craft':40B,85C 'critic':91C 'cve':13A,16A 'dawn':4A,21B,28B,61C 'execut':51B,77C 'googl':34B,63C 'graphic':31B 'html':41B,86C 'let':7A,38B 'memori':44B 'outsid':54B,80C 'overflow':6A,26B,59C 'page':10A,42B,87C 'potenti':50B,76C 'prior':68C 'remot':47B,73C 'run':11A 'runtim':22B 'sandbox':57B,82C 'secur':89C 'sever':90C 'trigger':43B 'via':83C 'web':9A 'webgpu':23B,30B","nicknames":[],"mitigations":[],"who_affected":"Android devices running Chrome older than 157.0.8103.38 are exposed when a user opens a crafted web page. Desktop Chrome and other browsers are not named in the sources. Users who keep Chrome updated are not affected.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"everyone","plain_action":"Update Chrome on your Android phone to version 157.0.8103.38 or later through the Play Store.","pkeys":[],"ptokens":[],"labels":["android","chrome","critical","dawn","runtime","webgpu"],"campaign_type":null,"first_public_at":"2026-11-03T21:17:35+00:00","kev":null,"cvss_vector":null,"cvss_by":null,"poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121247","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121247","severity":null,"published_at":"2026-11-03T21:17:35+00:00","modified_at":"2026-11-03T21:17:35+00:00","first_seen_at":"2026-11-03T21:19:29+00:00","fetched_at":"2026-11-03T21:19:29+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"}