CVE-2021-47789
CVE-2021-47789 is a high-severity vulnerability in Yenkee Yms 3029 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v4: 6.8
- EPSS exploit prediction: 0% (34th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-3012
- Weakness: CWE-787
- Affected product: Yenkee Yms 3029 Firmware
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2021-47789?
- 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.
- How severe is CVE-2021-47789?
- CVE-2021-47789 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2021-47789 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-47789?
- CVE-2021-47789 affects Yenkee Yms 3029 Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-47789?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2021-47789 have an EU (EUVD) identifier?
- Yes. CVE-2021-47789 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3012.
- When was CVE-2021-47789 published?
- CVE-2021-47789 was published on 2026-01-16 and last updated on 2026-06-17.
References
- https://github.com/Quadron-Research-Lab/Kernel_Driver_bugs/tree/main/GM312Fltr
- https://www.exploit-db.com/exploits/50311
- https://www.vulncheck.com/advisories/yenkee-hornet-gaming-mouse-gmfltrsys-denial-of-service-poc
- https://www.yenkee.eu/
Affected products (1)
- cpe:2.3:o:yenkee:yms_3029_firmware:*:*:*:*:*:*:*:*
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