{"id":"CVE-2026-121257","title":"Use after free in TabStrip in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted Chrome extension","summary":"Use after free in TabStrip in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted Chrome extension. (Chromium security severity: Medium)","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cvssSource":"adp","cwe":["CWE-416"],"vendor":"Google","product":"Chrome","affected":["Chrome >= 157.0.8103.38 < 157.0.8103.38"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-11-04T00:00:00+00:00"},"published":"2026-11-03","updated":"2026-11-05","sourceUpdated":"2026-11-05T04:56:09.016Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121257","references":[{"url":"https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html"},{"url":"https://issues.chromium.org/issues/567672825"}],"tags":["cve.org"],"epss":0.00211,"epssPercentile":0.11371,"ingestedAt":"2026-11-05T21:36:00.748Z","slug":"CVE-2026-121257","body":"## Overview\n\nUse after free in TabStrip in Google Chrome prior to 157.0.8103.38 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted Chrome extension. (Chromium security severity: Medium)\n\n## Affected\n\n- `Chrome >= 157.0.8103.38 < 157.0.8103.38`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}