CVE-2021-46851 Security feature bypass in EMUI

Critical 9.8 Published 9 Nov 2022 Updated 1 May 2025

Attackers can bypass secure memory attribute verification in the DRM module, causing abnormal video playback on Huawei devices.

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-2021-46851?

CVE-2021-46851 is a critical vulnerability in Huawei Emui, published on 9 Nov 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The DRM module has a vulnerability in verifying the secure memory attributes. Successful exploitation of this vulnerability may cause abnormal video playback.

Weakness: CWE-284

Which versions are affected by CVE-2021-46851?

It affects 2 products.

Products include Huawei Emui, Huawei Harmonyos.

How do I fix CVE-2021-46851?

No fix has been published for CVE-2021-46851 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-46851 being exploited?

There is no known exploitation of CVE-2021-46851 in the wild and no public exploit code.

All Huawei Emui vulnerabilities

Sources

Also known as GHSA-cgv3-q392-f56j.