CVE-2021-27944: Vizio e50x-e1 Firmware

Critical severity, CVSS 9.8. EPSS: 3.5% chance of exploitation in the next 30 days.

Several high privileged APIs on the Vizio P65-F1 6.0.31.4-2 and E50x-E1 10.0.31.4-2 Smart TVs do not enforce access controls, allowing an unauthenticated threat actor to access privileged functionality, leading to OS command execution. The specific attack methodology is a file upload.

Affected products

  • Vizio e50x-e1 Firmware: version 10.0.31.4-2 only
  • Vizio p65-f1 Firmware: version 6.0.31.4-2 only

Published 2021-08-26. Last modified 2026-06-17.