{"id":"CVE-2025-12909","title":"Insufficient policy enforcement in Devtools in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to leak cross-origin data via Devtools","summary":"Insufficient policy enforcement in Devtools in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to leak cross-origin data via Devtools. (Chromium security severity: Low)","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-693"],"vendor":"google","product":"chrome","affected":["chrome < 140.0.7339.80"],"patched":["chrome 140.0.7339.80"],"published":"2025-11-08","updated":"2026-09-30","sourceUpdated":"2026-09-30T16:10:00.223","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-12909","references":[{"url":"https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html","label":"chrome-cve-admin@google.com"},{"url":"https://issues.chromium.org/issues/361116749","label":"chrome-cve-admin@google.com"}],"tags":["nvd"],"epss":0.00195,"epssPercentile":0.08286,"ingestedAt":"2026-09-30T17:13:20.722Z","slug":"CVE-2025-12909","body":"## Overview\n\nInsufficient policy enforcement in Devtools in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to leak cross-origin data via Devtools. (Chromium security severity: Low)\n\n## Affected\n\n- `chrome < 140.0.7339.80`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `chrome 140.0.7339.80`","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}