{"id":"CVE-2026-121047","published":"2026-11-03T21:17:09.003","lastModified":"2026-11-04T05:18:31.377","description":"Buffer overflow in Media in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-122"],"vendors":[],"products":[],"references":[{"url":"https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html","tags":[]},{"url":"https://issues.chromium.org/issues/566251701","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A heap-based buffer overflow in Chrome's media component allowed remote code execution via a malicious HTML page loaded by a user.","exploitability":"Requires user interaction (e.g., visiting a crafted webpage); no special privileges needed.","blast_radius":"Successful exploitation could lead to full compromise of the sandboxed Chrome renderer process, potentially enabling data theft, browser hijacking, or lateral movement within the user's session.","remediation":"Upgrade Google Chrome to version 157.0.8103.38 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","buffer-overflow","sandbox-escape","web"],"model":"garnet-coder","analyzedAt":"2026-11-04T09:58:37.324Z"}}