What is the CVSS score of CVE-2021-47789?

CVE-2021-47789 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

Which versions of Yms 3029 Firmware are affected by CVE-2021-47789?

Organizations using Yenkee Hornet Gaming Mouse driver GM312Fltr.sys face notable risk from CVE-2021-47789, a stack-based buffer overflow vulnerability rated CVSS 7.5.

Is there a public PoC exploit available for CVE-2021-47789?

Yes, a public proof-of-concept exploit is available for CVE-2021-47789. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2021-47789?

Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.

Yms 3029 Firmware CVE-2021-47789

HIGH

Stack-based Buffer Overflow (CWE-121)

2026-01-16 disclosure@vulncheck.com

Linux Denial Of Service Yms 3029 Firmware

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 30, 2026 - 01:01 vuln.today

Public exploit code

CVE Published

Jan 16, 2026 - 00:16 nvd

HIGH 7.5

DescriptionCVE.org

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.

AnalysisAI

Technical ContextAI

Classified as CWE-121 (Stack-based Buffer Overflow). Affects Yms 3029 Firmware. 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.

RemediationAI

Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.

CVE-2021-47789 vulnerability details – vuln.today

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Yms 3029 Firmware CVE-2021-47789

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code