CVE-2025-20021 Arkcompiler Ets Runtime has an out-of-bounds read vulnerability
A local attacker can cause a denial of service in OpenHarmony via an out-of-bounds read in the Arkcompiler Ets Runtime.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-20021?
CVE-2025-20021 is a low-severity denial of service vulnerability in Openatom Openharmony, 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
in OpenHarmony v5.0.2 and prior versions allow a local attacker cause DOS through out-of-bounds read.
Weakness: CWE-125
Which versions are affected by CVE-2025-20021?
It affects 1 product.
Products include Openatom Openharmony.
How do I fix CVE-2025-20021?
No fix has been published for CVE-2025-20021 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-20021 being exploited?
There is no known exploitation of CVE-2025-20021 in the wild and no public exploit code.
Other vulnerabilities in Openatom Openharmony
- CVE-2025-0303 Liteos_a has a buffer overflow vulnerability
- CVE-2025-0304 Liteos_a has an use after free vulnerability
- CVE-2024-47398 Liteos_a has an out-of-bounds write vulnerability
- CVE-2024-10074 Liteos_a has an use after free vulnerability
- CVE-2024-41157 Liteos-A has an use after free vulnerability
Sources
Also known as GHSA-f3c2-qjqv-xwx2.