CVE-2021-47786

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2021-47786", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-01-14T14:39:44.738Z", "datePublished": "2026-01-15T23:25:39.342Z", "dateUpdated": "2026-04-07T14:06:10.152Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-04-07T14:06:10.152Z"}, "title": "Redragon Gaming Mouse - 'REDRAGON_MOUSE.sys' Denial of Service (PoC)", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Out-of-bounds Write", "cweId": "CWE-787", "type": "CWE"}]}], "affected": [{"vendor": "Redragon", "product": "Redragon Gaming Mouse", "versions": [{"version": "all version", "status": "affected"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "baseScore": 6.8, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS"}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "format": "CVSS"}], "references": [{"url": "https://www.exploit-db.com/exploits/50322", "name": "ExploitDB-50322", "tags": ["exploit"]}, {"url": "https://www.redragonzone.com/", "name": "Vendor Download Page", "tags": ["product"]}, {"url": "https://github.com/Quadron-Research-Lab/Kernel_Driver_bugs/tree/main/REDRAGON_MOUSE", "name": "Vulnerability Research Repository", "tags": ["technical-description", "exploit"]}, {"name": "VulnCheck Advisory: Redragon Gaming Mouse - 'REDRAGON_MOUSE.sys' Denial of Service (PoC)", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/redragon-gaming-mouse-redragonmousesys-denial-of-service-poc"}], "credits": [{"lang": "en", "value": "Quadron Research Lab", "type": "finder"}], "x_generator": {"engine": "vulncheck"}, "datePublic": "2021-09-23T00:00:00.000Z"}, "adp": [{"references": [{"url": "https://www.exploit-db.com/exploits/50322", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-01-16T15:54:50.508957Z", "id": "CVE-2021-47786", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-16T21:12:36.886Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47786", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-01-16T15:54:50.508957Z"}}}], "references": [{"url": "https://www.exploit-db.com/exploits/50322", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-01-16T15:55:18.830Z"}}], "cna": {"title": "Redragon Gaming Mouse - 'REDRAGON_MOUSE.sys' Denial of Service (PoC)", "credits": [{"lang": "en", "type": "finder", "value": "Quadron Research Lab"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.8, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "Redragon", "product": "Redragon Gaming Mouse", "versions": [{"status": "affected", "version": "all version"}]}], "references": [{"url": "https://www.exploit-db.com/exploits/50322", "name": "ExploitDB-50322", "tags": ["exploit"]}, {"url": "https://www.redragonzone.com/", "name": "Vendor Download Page", "tags": ["product"]}, {"url": "https://github.com/Quadron-Research-Lab/Kernel_Driver_bugs/tree/main/REDRAGON_MOUSE", "name": "Vulnerability Research Repository", "tags": ["technical-description", "exploit"]}, {"url": "https://www.vulncheck.com/advisories/redragon-gaming-mouse-redragonmousesys-denial-of-service-poc", "name": "VulnCheck Advisory: Redragon Gaming Mouse - 'REDRAGON_MOUSE.sys' Denial of Service (PoC)", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "vulncheck"}, "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-787", "description": "Out-of-bounds Write"}]}], "providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-01-15T23:25:39.342Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47786", "state": "PUBLISHED", "dateUpdated": "2026-01-16T21:12:36.886Z", "dateReserved": "2026-01-14T14:39:44.738Z", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "datePublished": "2026-01-15T23:25:39.342Z", "assignerShortName": "VulnCheck"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "Redragon Gaming Mouse", "vendor": "Redragon", "versions": [{"status": "affected", "version": "all version"}]}], "source": "disclosure@vulncheck.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m725-lit_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "08F36681-26DF-449E-96F5-17C115A1FE5A", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m725-lit:-:*:*:*:*:*:*:*", "matchCriteriaId": "0C0E44E8-C428-4186-9153-FFAE92659A38", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m617-lit_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "E78B3006-E3A9-40F1-9454-656645BF892E", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m617-lit:-:*:*:*:*:*:*:*", "matchCriteriaId": "B192E6EC-0445-4FE2-86C1-B9290C8A21C5", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m910-ks_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "687EF1E6-D5C7-4EA9-90CD-8D1D706C2C9F", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m910-ks:-:*:*:*:*:*:*:*", "matchCriteriaId": "F2F5BD2B-97D9-47D7-8E6D-25C53BC76F74", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m801p-rgb_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "CE1C3073-8D70-45F2-8F29-6AC57B5E74E1", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m801p-rgb:-:*:*:*:*:*:*:*", "matchCriteriaId": "3F847228-0F0B-495C-9A9F-3FA846FB0B8F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m602-ks_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "736BAD05-9D7B-4E5A-A38D-7F0DA42148D5", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m602-ks:-:*:*:*:*:*:*:*", "matchCriteriaId": "C93E506C-AAE1-4C74-948B-E8075F4E4799", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m914w-rgb_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "425DEDE4-AAD3-42D1-8E1E-9565E1B07E1E", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m914w-rgb:-:*:*:*:*:*:*:*", "matchCriteriaId": "6DB2B418-E165-477D-8D99-8B1082051C4F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m816-pro_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "67DAD031-205D-4F7C-9304-D72A90877E84", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m816-pro:-:*:*:*:*:*:*:*", "matchCriteriaId": "6A746508-45A7-4900-91EF-764877CE254F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m602a-rgb_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "D5A792A0-C353-4C21-A773-5E8B4C865CF0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m602a-rgb:-:*:*:*:*:*:*:*", "matchCriteriaId": "08CBF911-61D2-474C-8408-2848482F1D90", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m721_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "7E9D3D78-C5CC-4CB6-8509-4F5F631A24FB", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m721:-:*:*:*:*:*:*:*", "matchCriteriaId": "87F21B8B-734B-4F3F-A633-3302C9945F4F", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m602aw-rgb_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "ACEE7D99-1DAD-4B0F-8CEF-3A9E9DE6AA7F", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m602aw-rgb:-:*:*:*:*:*:*:*", "matchCriteriaId": "83D68CBE-62C7-44FA-AC1E-625AD8E28031", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m915rgb-wl_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "9AB795EA-4915-46E5-9C4F-E7DEC7252ECF", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m915rgb-wl:-:*:*:*:*:*:*:*", "matchCriteriaId": "9384850C-F6C7-4DD4-BC40-7334EF2C0406", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m712-rgb_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "78DC8986-56AF-406A-9BCF-21E903DBA68D", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m712-rgb:-:*:*:*:*:*:*:*", "matchCriteriaId": "9DFD4181-CFA2-46B5-A739-AE1C5DB2FB64", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:m910-k_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "C94F87A2-29D7-465B-97BC-C9533FF510B5", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:m910-k:-:*:*:*:*:*:*:*", "matchCriteriaId": "9E67446C-985B-41E0-8C13-8A017345C253", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redragon:bm-4091_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "69835B94-8446-45A8-A3F7-3C5A19AE3ABE", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:redragon:bm-4091:-:*:*:*:*:*:*:*", "matchCriteriaId": "BE711085-17D1-4C45-A015-115454A58301", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "El controlador del rat\u00f3n para juegos Redragon contiene una vulnerabilidad a nivel de kernel que permite a los atacantes desencadenar una denegaci\u00f3n de servicio enviando solicitudes IOCTL malformadas. Los atacantes pueden enviar un b\u00fafer manipulado de 2000 bytes con patrones de bytes espec\u00edficos al dispositivo REDRAGON_MOUSE para bloquear el controlador del kernel."}], "id": "CVE-2021-47786", "lastModified": "2026-06-17T04:18:29.370", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "disclosure@vulncheck.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47786", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-16T15:54:50.508957Z", "version": "2.0.3"}}]}, "published": "2026-01-16T00:16:21.887", "references": [{"source": "disclosure@vulncheck.com", "tags": ["Exploit"], "url": "https://github.com/Quadron-Research-Lab/Kernel_Driver_bugs/tree/main/REDRAGON_MOUSE"}, {"source": "disclosure@vulncheck.com", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.exploit-db.com/exploits/50322"}, {"source": "disclosure@vulncheck.com", "tags": ["Product"], "url": "https://www.redragonzone.com/"}, {"source": "disclosure@vulncheck.com", "tags": ["Third Party Advisory"], "url": "https://www.vulncheck.com/advisories/redragon-gaming-mouse-redragonmousesys-denial-of-service-poc"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"], "url": "https://www.exploit-db.com/exploits/50322"}], "sourceIdentifier": "disclosure@vulncheck.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "disclosure@vulncheck.com", "type": "Secondary"}]}

{}

{"created": "2026-01-16T13:42:22.338642+00:00", "updated": "2026-01-16T13:42:22.338678+00:00", "vendors": ["redragon", "redragon$PRODUCT$gaming_mouse"]}