BaseFortify

Publication date: 2025-11-08

Last updated on: 2025-11-21

Assigner: Chrome

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)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-11-08

Last Modified

2025-11-21

Generated

2026-07-06

AI Q&A

2025-11-08

EPSS Evaluated

2026-07-05

NVD

CVE-2025-12909

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 140.0.7339.80 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-693	The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

Attack-Flow Graph

Executive Summary

This vulnerability is due to insufficient policy enforcement in the Devtools feature of Google Chrome versions prior to 140.0.7339.80. It allows a remote attacker to leak cross-origin data via Devtools, meaning that data from one origin could be accessed by another unauthorized origin through the developer tools.

Impact Analysis

The impact of this vulnerability is that a remote attacker could potentially access and leak sensitive data from different origins through Chrome's Devtools. This could lead to unauthorized disclosure of information that should be isolated between different websites or web applications.

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