CVE-2021-46742 Missing authorization in EMUI

Critical 9.1 Published 11 Apr 2022 Updated 4 Aug 2024

Attackers can unauthorizedly insert or tamper with Settings.Secure data in the multi-window module, potentially affecting system availability.

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-2021-46742?

CVE-2021-46742 is a critical missing authorization vulnerability in Huawei Emui, published on 11 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The multi-window module has a vulnerability of unauthorized insertion and tampering of Settings.Secure data.Successful exploitation of this vulnerability may affect the availability.

Which versions are affected by CVE-2021-46742?

It affects 3 products.

Products include Huawei Emui, Huawei Harmonyos, Huawei Magic Ui.

How do I fix CVE-2021-46742?

No fix has been published for CVE-2021-46742 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-2021-46742 being exploited?

There is no known exploitation of CVE-2021-46742 in the wild and no public exploit code.

All Huawei Emui vulnerabilities

Sources

Also known as GHSA-mcr8-34qp-4cg4.