CVE-2026-11198 is a critical security vulnerability in Google Chrome's codec handling where insufficient validation of untrusted input allows a remote attacker to potentially escape the browser's sandbox environment by delivering a crafted video file. This vulnerability affects Chrome versions before 149.0.7827.53. The CVSS 3.1 base score is 9.6, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and complete impact on confidentiality, integrity, and availability. No official remediation level or patch availability is explicitly stated in the provided data, but a vendor advisory URL is given for further details.

Successful exploitation could lead to a sandbox escape, allowing an attacker to execute code outside the browser's restricted environment. This could compromise the user's system confidentiality, integrity, and availability. The vulnerability is rated critical with a CVSS score of 9.6, indicating a severe security risk if exploited.

Patch status is not yet confirmed — check the vendor advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html for current remediation guidance. Until an official fix is confirmed, users should exercise caution when opening untrusted video files and consider limiting exposure to potentially malicious content.