CVE-2021-46891 Missing authorization in EMUI

Critical 9.8 Published 5 Jul 2023 Updated 20 Nov 2024

Attackers can exploit incomplete permission checks in the GPU module to compromise service confidentiality, integrity, and availability 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-2021-46891?

CVE-2021-46891 is a critical missing authorization vulnerability in Huawei Emui, published on 5 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability of incomplete read and write permission verification in the GPU module. Successful exploitation of this vulnerability may affect service confidentiality, integrity, and availability.

Weakness: CWE-863, CWE-200

Which versions are affected by CVE-2021-46891?

It affects 2 products.

Products include Huawei Emui, Huawei Harmonyos.

How do I fix CVE-2021-46891?

No fix has been published for CVE-2021-46891 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-2021-46891 being exploited?

There is no known exploitation of CVE-2021-46891 in the wild and no public exploit code.

All Huawei Emui vulnerabilities

Sources

Also known as GHSA-c7wh-g26h-jp33.