CVE-2025-12909: Insufficient policy enforcement in Devtools
Published Aug 20, 2024
·Updated
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)
Credit
Noam Gaash
Affected Software
3 affected componentsFixes available
Google Chrome<140.0.7339.80
Google Chrome<140.0.7339.80
140.0.7339.80
Google Chrome<140.0.7339.80
Event History
Aug 20, 2024
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Nov 7, 2025
CVE Published
via MITRE·11:23 PM
Data Sourced
via MITRE·11:23 PM
DescriptionWeakness
Nov 8, 2025
Data Sourced
via NVD·12:15 AM
DescriptionSeverityWeaknessAffected Software
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
1
What is the severity of CVE-2025-12909?
The severity of CVE-2025-12909 is classified as Low.
2
How do I fix CVE-2025-12909?
To fix CVE-2025-12909, update your Google Chrome to version 140.0.7339.80 or later.
3
What does CVE-2025-12909 affect?
CVE-2025-12909 affects Google Chrome versions prior to 140.0.7339.80.
4
What kind of data leak is associated with CVE-2025-12909?
CVE-2025-12909 allows a remote attacker to leak cross-origin data via Devtools.
5
Is CVE-2025-12909 limited to a specific platform?
CVE-2025-12909 is specifically related to the Google Chrome browser.