CVE-2026-5281 is a use-after-free (CWE-416) in Google Dawn, the shared WebGPU implementation embedded in all Chromium-based browsers, carrying a CVSS of 8.8 and confirmed CISA KEV status with a federal remediation deadline of April 15, 2026. Because Dawn is shared infrastructure, blast radius extends across Google Chrome, Microsoft Edge, Opera, and any application embedding CEF or Chromium, making this a fleet-wide patching priority. Patch all Chromium-based browsers immediately to vendor-released fixed versions; verify version strings via MDM or endpoint management and monitor EDR for anomalous child process spawning from browser executables as a post-exploitation indicator.