CVE-2026-49306 Use after free in HarmonyOS
A use-after-free flaw in the time and time zone module allows attackers to cause a denial of service on HarmonyOS devices.
- 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-2026-49306?
CVE-2026-49306 is a low-severity use after free vulnerability in Huawei HarmonyOS, published on 17 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
UAF vulnerability in the time and time zone module. Impact: Successful exploitation of this vulnerability may affect availability.
Weakness: CWE-416
Which versions are affected by CVE-2026-49306?
How do I fix CVE-2026-49306?
No fix has been published for CVE-2026-49306 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-2026-49306 being exploited?
There is no known exploitation of CVE-2026-49306 in the wild and no public exploit code.
Sources
Also known as GHSA-h37j-x6fg-r8wf.