Security readout for executives and security teams
Plain-English summary
This flaw affects the Redragon Gaming Mouse Windows kernel driver. A malformed request to the driver can crash the system, causing denial of service. Public proof-of-concept material exists, but the provided sources do not show active exploitation or a confirmed vendor fix.
Executive priority
Treat as a targeted endpoint availability risk. It is unlikely to threaten data directly, but it can crash affected machines and disrupt operations. Prioritize environments where workstation outages are costly or where untrusted users can access affected systems.
Technical view
CVE-2021-47786 is reported as a CWE-787 issue in REDRAGON_MOUSE.sys. Malformed IOCTL input to the REDRAGON_MOUSE device can trigger a kernel-driver crash. The listed CVSS v3.1 score is 7.5, with availability impact only. Affected scope is stated as Redragon Gaming Mouse, all versions, but version detail is limited.
Likely exposure
Exposure is most likely on Windows endpoints where Redragon Gaming Mouse software or REDRAGON_MOUSE.sys is installed. Enterprises with gaming peripherals, unmanaged workstations, labs, or BYOD-style endpoints are more likely to encounter it. Server exposure is unlikely unless the driver was installed there.
Exploitation context
Public PoC references are available via ExploitDB and a research repository. The source bundle does not include CISA KEV listing and does not substantiate active exploitation. The demonstrated impact is system crash, not code execution or data theft, based on the provided sources.
Researcher notes
The source data names public PoCs and a kernel-driver IOCTL crash condition, but does not provide a vendor advisory, fixed version, or confirmed exploitation in the wild. Validate affected-driver presence before broad response. Avoid assuming every Redragon peripheral uses this specific driver.
Mitigation direction
- Inventory endpoints for Redragon mouse software and REDRAGON_MOUSE.sys.
- Check Redragon’s official site for updated software or driver guidance.
- Remove or disable the driver where the device or software is not required.
- Prioritize remediation on shared, kiosk, lab, and high-availability workstations.
- Monitor EDR and crash telemetry for repeated REDRAGON_MOUSE.sys failures.
Validation and detection
- Confirm whether REDRAGON_MOUSE.sys is present on managed Windows endpoints.
- Record installed Redragon software and driver versions where available.
- Review vendor downloads or advisories for newer driver packages.
- Check crash dumps or reliability logs for REDRAGON_MOUSE.sys involvement.
- Verify removal or replacement on systems marked remediated.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-47786 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-50322CVE reference · exploit
- Vendor Download PageCVE reference · product
- Vulnerability Research RepositoryCVE reference · technical-description, exploit
- VulnCheck Advisory: Redragon Gaming Mouse - 'REDRAGON_MOUSE.sys' Denial of Service (PoC)CVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.