CVE-2026-17691 is a high-severity out-of-bounds write vulnerability in ANGLE (Almost Native Graphics Layer Engine) within Google Chrome on Windows. The flaw exists in versions prior to 151.0.7922.72 and allows a remote attacker to potentially perform a sandbox escape by convincing a user to visit a crafted HTML page. The vulnerability has been assigned a 'High' severity rating by the Chromium security team. Google has addressed the issue in the stable channel update released for desktop. The issue is tracked internally under Chromium bug ID 517321292. Users are advised to update to Chrome 151.0.7922.72 or later to mitigate the risk.