CVE-2025-12909 - 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

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MEDIUM

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

Published Nov 7, 2025

5.3

MEDIUM

CVSS 3.1

EPSS 0.19%

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)

Affected products

Vendor Google Product Chrome Default
n/a
- Version
  140.0.7339.80
  Status
  affected
  Constraints
  <140.0.7339.80

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Google

Chrome

n/a

Version	Status	Constraints
140.0.7339.80	affected	<140.0.7339.80

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-693

References (3)

https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html
Vendor Advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-38336
Advisory
https://issues.chromium.org/issues/361116749
ExploitIssue Tracking

Link	Providers	Tags
https://chromereleases.googleblog.com/2025/09/stable-channel-update-for-desktop.html		Vendor Advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-38336		Advisory
https://issues.chromium.org/issues/361116749		ExploitIssue Tracking