CVE-2021-47789

Name: CVE-2021-47789
Creator: NVD / NIST
Published: 2026-01-16T00:16:22.45+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2021-47789 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 4.0

6.8/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.42%

33.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Yenkee	Yms 3029 Firmware	All versions

References

https://github.com/Quadron-Research-Lab/Kernel_Driver_bugs/tree/main/GM312FltrExploit
https://www.exploit-db.com/exploits/50311Exploit
https://www.vulncheck.com/advisories/yenkee-hornet-gaming-mouse-gmfltrsys-denial-of-service-pocThird Party Advisory
https://www.yenkee.eu/Product
https://www.exploit-db.com/exploits/50311Exploit

Timeline

Published: Jan 16, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-47789?

How severe is CVE-2021-47789?

CVE-2021-47789 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2021-47789?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-47789?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST