CVE-2025-12436: 
vulnerability analysis and mitigation

CVE-2025-12436 is a policy bypass vulnerability discovered in Google Chrome's Extensions system. The vulnerability was reported by Luan Herrera (@lbherrera) on February 8, 2021, and was publicly disclosed on October 28, 2025. This security issue affects Google Chrome versions prior to 142.0.7444.59 and various Chrome-based browsers including Prisma Browser versions below 142.15.2.60 ([Chrome Release](https://chromereleases.googleblog.com/2025/10/stable-channel-update-for-desktop28.html), PAN Advisory).

The vulnerability is classified as Medium severity with a CVSS 3.1 score of 5.9, indicating a high-complexity network attack vector that requires no privileges or user interaction. The vulnerability allows an attacker to potentially access sensitive information from process memory through a crafted Chrome Extension. The attack requires network access and has high confidentiality impact, but no impact on integrity or availability (Ubuntu Security).

If successfully exploited, the vulnerability allows an attacker who convinces a user to install a malicious extension to obtain potentially sensitive information from process memory. The vulnerability has been assessed with high confidentiality impact but does not affect system integrity or availability (Debian Tracker).

The vulnerability has been patched in Google Chrome version 142.0.7444.59 and Prisma Browser version 142.15.2.60. Users are advised to update their browsers to these versions or later. No known workarounds exist for this issue (PAN Advisory, Chrome Release).