CVE-2026-10921 Integer overflow in Chrome
A remote attacker with compromised renderer access can escape the sandbox via integer overflow in Dawn, requiring a browser update.
- 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-2026-10921?
CVE-2026-10921 is a high-severity vulnerability in Google Chrome, published on 4 Jun 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
Integer overflow in Dawn in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
Which versions are affected by CVE-2026-10921?
It affects 1 product.
Products include Google Chrome.
How do I fix CVE-2026-10921?
Upgrade to a fixed version.
Is CVE-2026-10921 being exploited?
There is no known exploitation of CVE-2026-10921 in the wild and no public exploit code.
Other vulnerabilities in Google Chrome
Sources
Also known as DEBIAN-CVE-2026-10921, ECHO-0486-cc25-3906, GHSA-h7gm-jhf8-grrp, MINI-2f3f-xpcw-rpjp.