CVE-2025-27521 Missing authorization in HarmonyOS

Medium 6.8 Published 4 Mar 2025 Updated 18 Sep 2025

Improper access permissions in HarmonyOS process management allow attackers to compromise service confidentiality.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-27521?

CVE-2025-27521 is a medium-severity missing authorization vulnerability in Huawei Harmonyos, published on 4 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Vulnerability of improper access permission in the process management module Impact: Successful exploitation of this vulnerability may affect service confidentiality.

Weakness: CWE-276, CWE-280

Which versions are affected by CVE-2025-27521?

It affects 1 product.

Products include Huawei Harmonyos.

How do I fix CVE-2025-27521?

No fix has been published for CVE-2025-27521 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-2025-27521 being exploited?

There is no known exploitation of CVE-2025-27521 in the wild and no public exploit code.

All Huawei Harmonyos vulnerabilities

Sources

Also known as GHSA-r8mv-whv9-j8cj.