CVE-2026-121156

Summary

A heap-based buffer overflow in Google Chrome's Dawn graphics library prior to version 157.0.8103.38 allowed remote attackers to execute arbitrary code outside the sandbox by tricking a user into visiting a malicious HTML page.

Exploitability

Exploitation requires user interaction (e.g., clicking a link or visiting a crafted webpage) and precise memory corruption conditions, making it non-trivial but feasible for skilled attackers.

Blast radius

Successful exploitation could lead to full system compromise outside Chrome's sandbox, enabling data theft, malware installation, or lateral movement within the host.

Detection

No reliable host or network indicator is derivable from the published description.

Prioritized remediation

Upgrade Google Chrome to version 157.0.8103.38 or later.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.