CVE-2026-34867 Use after free in HarmonyOS
A double free vulnerability in the multi-mode input system of HarmonyOS allows attackers to cause a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-34867?
CVE-2026-34867 is a medium-severity use after free vulnerability in Huawei Harmonyos, published on 13 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Double free vulnerability in the multi-mode input system. Impact: Successful exploitation of this vulnerability may affect availability.
Weakness: CWE-415
Which versions are affected by CVE-2026-34867?
It affects 1 product.
Products include Huawei Harmonyos.
How do I fix CVE-2026-34867?
No fix has been published for CVE-2026-34867 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-34867 being exploited?
There is no known exploitation of CVE-2026-34867 in the wild and no public exploit code.
Other vulnerabilities in Huawei Harmonyos
Sources
Also known as GHSA-84fx-xj3c-r25h.