CVE-2026-121217

High

Description

Use after free in Streaming in Google Chrome prior to 157.0.8103.38 allowed an adjacent attacker to execute arbitrary code inside the sandbox via crafted network traffic. (Chromium security severity: Low)

SeverityHigh

CVSS7.5

Exploit probability—

Product

Chrome

PublishedNov 3, 2026

First seenNov 4, 2026

Weakness typeCWE-416Use after free

How to fix

Update

Google Chrome157.0.8103.38 or later
google chrome157.0.8103.38 or later

Vendor advisories

chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop.html

Affected products

Product	Affected versions	Fixed in
Google Chrome	157.0.8103.38	157.0.8103.38
google chrome	v < 157.0.8103.38	157.0.8103.38

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.