CVE-2026-81647 Denial of service in HarmonyOS
An out-of-bounds read in the graphics module allows attackers to cause a denial of service on Huawei HarmonyOS 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-2026-81647?
CVE-2026-81647 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, with no action from the victim.
Official description
Out-of-bounds read vulnerability in the graphics module. Impact: Successful exploitation of this vulnerability may affect availability.
Weakness: CWE-680
Which versions are affected by CVE-2026-81647?
How do I fix CVE-2026-81647?
No fix has been published for CVE-2026-81647 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-2026-81647 being exploited?
There is no known exploitation of CVE-2026-81647 in the wild and no public exploit code.
Sources
Also known as GHSA-w636-f239-2q8q.