CVE-2026-81644 Denial of service in HarmonyOS
Attackers can cause a denial of service in the HarmonyOS preview service module, affecting system availability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-81644?
CVE-2026-81644 is a medium-severity denial of service vulnerability in Huawei HarmonyOS, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
DoS vulnerability in the preview service module. Impact: Successful exploitation of this vulnerability may affect availability.
Weakness: CWE-264
Which versions are affected by CVE-2026-81644?
How do I fix CVE-2026-81644?
No fix has been published for CVE-2026-81644 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-2026-81644 being exploited?
There is no known exploitation of CVE-2026-81644 in the wild and no public exploit code.
Sources
Also known as GHSA-p4hv-25pv-2j2g.