CVE-2021-47789 MEDIUM

CVE-2021-47789: Yenkee Hornet Gaming Mouse - 'GM312Fltr.sys' Denial of Service (PoC)

Vendor Yenkee
Product Yenkee Hornet Gaming Mouse
Weakness CWE-121
Published January 15, 2026
Last update April 7, 2026
View on NVD All CVEs

CVSS base score

6.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 15, 2026 CVE published
April 7, 2026 Record updated