CVE-2021-47789 Yenkee Hornet Gaming Mouse - 'GM312Fltr.sys' Denial of Service (PoC)
Attackers can crash the system by sending oversized input to the Yenkee Hornet Gaming Mouse driver, causing a kernel-level denial of service.
- 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-2021-47789?
CVE-2021-47789 is a medium-severity memory corruption vulnerability in Yenkee Hornet Gaming Mouse, published on 15 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Yenkee Hornet Gaming Mouse driver GM312Fltr.sys contains a buffer overrun vulnerability that allows attackers to crash the system by sending oversized input. Attackers can exploit the driver by sending a 2000-byte buffer through DeviceIoControl to trigger a kernel-level system crash.
Which versions are affected by CVE-2021-47789?
It affects 1 product.
Products include Yenkee Yms 3029 Firmware.
How do I fix CVE-2021-47789?
No fix has been published for CVE-2021-47789 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-47789 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47789 exists.
Sources
Also known as GHSA-h7xf-488f-xfx8.