Use After Free Vulnerability in Streaming for Google Chrome
CVE-2026-121217

7.5HIGH

Key Information:

Vendor

Google
Status
Chrome
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121217?

A Use After Free vulnerability exists in Google Chrome's Streaming component, allowing an adjacent attacker to exploit crafted network traffic. This flaw can lead to arbitrary code execution within the browser's sandbox environment, potentially compromising user security. Users are advised to update to the latest version to mitigate the risk associated with this vulnerability.

Affected Version(s)

Chrome 157.0.8103.38

References

https://chromereleases.googleblog.com/2026/11/stable-chan...
https://issues.chromium.org/issues/500600456

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.