Use of uninitialized variable in Chrome OS - CVE-2026-99220
Published: June 18, 2026
Vulnerability identifier: #VU134800
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-99220
CWE-ID: CWE-457
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Google
Affected software:
Chrome OS
Chrome OS
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to use of uninitialized variable in GPU. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code on the system.
How to mitigate CVE-2026-99220
Install updates from vendor's website.