CVE-2026-17666 is a high-severity cryptographic flaw identified in the Enterprise component of Google Chrome prior to version 151.0.7922.72. The vulnerability allows an attacker positioned in a privileged network location to bypass discretionary access control through crafted malicious network traffic. The flaw is classified as a Cryptographic issue and carries a Chromium security severity rating of High. Google addressed the vulnerability in Chrome stable channel version 151.0.7922.72. The issue was tracked internally via Chromium issue tracker. Users and organizations running older versions of Chrome are advised to update immediately to mitigate the risk of network-based access control bypass attacks.