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CVE-2025-12909
Google Chrome Devtools Cross-Origin Data Leaking Vulnerability
Description

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)

INFO

Published Date :

Nov. 8, 2025, 12:15 a.m.

Last Modified :

Nov. 8, 2025, 12:15 a.m.

Remotely Exploit :

No

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-12909 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Google chrome
: Total Affected Vendor : 1 | Products : 1
Solution
Update Google Chrome to a version that addresses the Devtools policy enforcement flaw.
  • Update Google Chrome to version 140.0.7339.80 or later.
  • Ensure Devtools policy enforcement is properly configured.
  • Apply relevant security patches for browser components.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-12909.

URL Resource
https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html
https://issues.chromium.org/issues/361116749
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-12909 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-12909 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-12909 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-12909 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Nov. 08, 2025

    Action Type Old Value New Value
    Added Description 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)
    Added Reference https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html
    Added Reference https://issues.chromium.org/issues/361116749
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
No CVSS metrics available for this vulnerability.