CVE-2021-27944 Missing authorization in n/a

Critical 9.8 Published 26 Aug 2021 Updated 3 Aug 2024

Unauthenticated attackers can execute OS commands on Vizio Smart TVs due to missing access controls on privileged APIs.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-27944?

CVE-2021-27944 is a critical missing authorization vulnerability in n/a, published on 26 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-78

Which versions are affected by CVE-2021-27944?

It affects 2 products.

Products include Vizio E50x-E1 Firmware, Vizio P65-F1 Firmware.

How do I fix CVE-2021-27944?

No fix has been published for CVE-2021-27944 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-27944 being exploited?

There is no known exploitation of CVE-2021-27944 in the wild and no public exploit code.

Sources

Also known as GHSA-28c3-vcgc-4w82.