CVE-2026-87440 Memory corruption in Chrome

High 8.8 Published Updated

A remote attacker can execute arbitrary code inside the sandbox via a crafted HTML page due to an out-of-bounds read in Media.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2026-87440?

CVE-2026-87440 is a high-severity memory corruption vulnerability in Google Chrome, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Out of bounds read in Media in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

Weakness: CWE-125

Which versions are affected by CVE-2026-87440?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-87440?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-87440 being exploited?

There is no known exploitation of CVE-2026-87440 in the wild and no public exploit code.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-87440, ECHO-6fc0-dafc-c852, GHSA-5qhp-x6hh-g873, MINI-qx59-grqh-39h7.

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