CVE-2026-17673 Integer overflow in Chrome
A remote attacker with compromised renderer access can escape the sandbox via an integer overflow in QUIC, 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-2026-17673?
CVE-2026-17673 is a critical vulnerability in Google Chrome, published on 30 Jul 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 QUIC in Google Chrome prior to 151.0.7922.72 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)
Weakness: CWE-190
Which versions are affected by CVE-2026-17673?
It affects 1 product.
Products include Google Chrome.
How do I fix CVE-2026-17673?
Upgrade to a fixed version.
Is CVE-2026-17673 being exploited?
There is no known exploitation of CVE-2026-17673 in the wild and no public exploit code.
Other vulnerabilities in Google Chrome
Sources
Also known as DEBIAN-CVE-2026-17673, ECHO-01c8-5ef0-213a, GHSA-vfc9-3hpj-ph62, MINI-m5j4-p9v2-q999.