How severe is CVE-2021-47786?

CVE-2021-47786 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-2021-47786 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-47786?

CVE-2021-47786 primarily affects Redragon M725-lit Firmware. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-47786?

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-2021-47786 have an EU (EUVD) identifier?

Yes. CVE-2021-47786 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3011.

When was CVE-2021-47786 published?

CVE-2021-47786 was published on 2026-01-16 and last updated on 2026-06-17.

CVE-2021-47786

CVE-2021-47786 is a high-severity vulnerability in Redragon M725-lit 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% (35th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3011
Weakness: CWE-787
Affected product: Redragon M725-lit Firmware
Published: 2026-01-16
Last modified: 2026-06-17

Description

Redragon Gaming Mouse driver contains a kernel-level vulnerability that allows attackers to trigger a denial of service by sending malformed IOCTL requests. Attackers can send a crafted 2000-byte buffer with specific byte patterns to the REDRAGON_MOUSE device to crash the kernel driver.

Frequently asked questions

What is CVE-2021-47786?: Redragon Gaming Mouse driver contains a kernel-level vulnerability that allows attackers to trigger a denial of service by sending malformed IOCTL requests. Attackers can send a crafted 2000-byte buffer with specific byte patterns to the REDRAGON_MOUSE device to crash the kernel driver.
How severe is CVE-2021-47786?: CVE-2021-47786 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-2021-47786 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-47786?: CVE-2021-47786 primarily affects Redragon M725-lit Firmware. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-47786?: 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-2021-47786 have an EU (EUVD) identifier?: Yes. CVE-2021-47786 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3011.
When was CVE-2021-47786 published?: CVE-2021-47786 was published on 2026-01-16 and last updated on 2026-06-17.

References

Affected products (14)

cpe:2.3:o:redragon:m725-lit_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m617-lit_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m910-ks_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m801p-rgb_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m602-ks_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m914w-rgb_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m816-pro_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m602a-rgb_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m721_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m602aw-rgb_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m915rgb-wl_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m712-rgb_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:m910-k_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:redragon:bm-4091_firmware:-:*:*:*:*:*:*:*

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