CVE-2026-3909 Google Skia Out-of-Bounds Write

Exploited in the wild High 8.8 Published 12 Mar 2026 Updated 24 Mar 2026

A remote attacker can execute arbitrary code via a crafted HTML page exploiting an out-of-bounds write in the Skia graphics library.

Exploited in the wild: Since 13 Mar 2026
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2026-3909?

CVE-2026-3909 is a high-severity memory corruption vulnerability in Google Chrome, published on 12 Mar 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 write in Skia in Google Chrome prior to 146.0.7680.75 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)

Weakness: CWE-787

Which versions are affected by CVE-2026-3909?

It affects 1 product.

Products include Google Chrome.

How do I fix CVE-2026-3909?

Upgrade to a fixed version. US federal agencies must fix it by 27 Mar 2026.

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

Is CVE-2026-3909 being exploited?

Yes. Attackers have exploited CVE-2026-3909 in the wild since at least 13 Mar 2026.

Public exploit code: 1 proofs of concept on GitHub.

All Google Chrome vulnerabilities

Sources

Also known as DEBIAN-CVE-2026-3909, ECHO-801d-da02-2133, GHSA-vmc5-xpp6-2j82, MINI-3r22-9m4h-2624, UBUNTU-CVE-2026-3909.