CVE-2025-12436 Security feature bypass in Chrome

What is CVE-2025-12436?

CVE-2025-12436 is a medium-severity vulnerability in Google Chrome, published on 10 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Policy bypass in Extensions in Google Chrome prior to 142.0.7444.59 allowed an attacker who convinced a user to install a malicious extension to obtain potentially sensitive information from process memory via a crafted Chrome Extension. (Chromium security severity: Medium)

Weakness: CWE-306

Which versions are affected by CVE-2025-12436?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2025-12436?

Upgrade to a fixed version.

Is CVE-2025-12436 being exploited?

There is no known exploitation of CVE-2025-12436 in the wild and no public exploit code.

Other vulnerabilities in Google Chrome

• CVE-2022-4135 Google Chromium GPU Heap Buffer Overflow Exploited Critical 9.6
• CVE-2020-16017 Google Chrome Use-After-Free Exploited Critical 9.6
• CVE-2020-16010 Google Chrome for Android UI Heap Buffer Overflow Exploited Critical 9.6
• CVE-2026-87491 Google Chromium V8 Out of Bounds Write Exploited High 8.8
• CVE-2026-85046 Google Chromium V8 Type Confusion Exploited High 8.8

All Google Chrome vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-12436, GHSA-j4j8-2vcc-42hj.