CVE-2021-45638
Estado: ModificadaCrítica (9.8)—
Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000v2 before 1.0.0.74, D8500 before 1.0.3.60, DC112A before 1.0.0.56, R6300v2 before 1.0.4.50, R6400 before 1.0.1.68, R7000 before 1.0.11.116, R7100LG before 1.0.0.70, RBS40V before 2.6.2.8, RBW30 before 2.6.2.2, RS400 before 1.5.1.80, R7000P before 1.3.2.132, and R6900P before 1.3.2.132.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 9.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.47%
- Percentil entre todas las CVEs puntuadas: 73
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (14)
Netgear — D6220 FirmwareNetgear — D6400 FirmwareNetgear — D7000v2 FirmwareNetgear — D8500 FirmwareNetgear — Dc112a FirmwareNetgear — R6300v2 FirmwareNetgear — R6400 FirmwareNetgear — R6900p FirmwareNetgear — R7000 FirmwareNetgear — R7000p FirmwareNetgear — R7100lg FirmwareNetgear — Rbs40v FirmwareNetgear — Rbw30 FirmwareNetgear — Rs400 Firmware
CWE
- CWE-787
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2021-45638",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 7.5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"authentication": "NONE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 10,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 9.6,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 2.8
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 9.8,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 3.9
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2021-12-26T01:15:19.550",
"references": [
{
"url": "https://kb.netgear.com/000064496/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2020-0464",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://kb.netgear.com/000064496/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2020-0464",
"tags": [
"Patch",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000v2 before 1.0.0.74, D8500 before 1.0.3.60, DC112A before 1.0.0.56, R6300v2 before 1.0.4.50, R6400 before 1.0.1.68, R7000 before 1.0.11.116, R7100LG before 1.0.0.70, RBS40V before 2.6.2.8, RBW30 before 2.6.2.2, RS400 before 1.5.1.80, R7000P before 1.3.2.132, and R6900P before 1.3.2.132."
},
{
"lang": "es",
"value": "Determinados dispositivos NETGEAR están afectados por un desbordamiento del búfer en la región stack de la memoria por parte de un atacante no autenticado. Esto afecta a D6220 versiones anteriores a 1.0.0.68, D6400 versiones anteriores a 1.0.0.102, D7000v2 versiones anteriores a 1.0.0.74, D8500 versiones anteriores a 1.0.3.60, DC112A versiones anteriores a 1.0.0.56, R6300v2 versiones anteriores a 1.0.4.50, R6400 versiones anteriores a 1.0. 1.68, R7000 versiones anteriores a 1.0.11.116, R7100LG versiones anteriores a 1.0.0.70, RBS40V versiones anteriores a 2.6.2.8, RBW30 versiones anteriores a 2.6.2.2, RS400 versiones anteriores a 1.5.1.80, R7000P versiones anteriores a 1.3.2.132 y R6900P versiones anteriores a 1.3.2.132"
}
],
"lastModified": "2026-06-17T04:13:50.203",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d6220_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "ADF65DC4-51D5-4C38-B28D-7EA93B1734A3",
"versionEndExcluding": "1.0.0.68"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:d6220:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "F3EEA190-2E9C-4586-BF81-B115532FBA23"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d6400_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "888A8E0F-93DD-436D-B00C-F469C3BD6E5B",
"versionEndExcluding": "1.0.0.102"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:d6400:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7D30939B-86E3-4C78-9B05-686B4994C8B9"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d7000v2_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C2D1C234-22F1-4837-9D04-059170A97072",
"versionEndExcluding": "1.0.0.74"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:d7000v2:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "6DC6BD34-1A2C-4247-A20C-0B44C0F56E0F"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d8500_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "160F53B0-8430-4D85-8ABC-0A64B27DDFBD",
"versionEndExcluding": "1.0.3.60"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:d8500:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "814A0114-9A1D-4EA0-9AF4-6968514E4F01"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:dc112a_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3E0F22CB-81AF-4721-B5D0-426A0B356EBA",
"versionEndExcluding": "1.0.0.56"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:dc112a:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "F87FFC46-137D-45B8-B437-F15565FB33D0"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r6300v2_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2FC74970-ACD5-482D-91C7-C46246E0BDC0",
"versionEndExcluding": "1.0.4.50"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r6300v2:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7909744D-FE9B-49D1-ADB3-029CCC432A47"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "930E739E-EFDC-49AB-9155-A71C2B25FCD6",
"versionEndExcluding": "1.0.1.68"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r6400:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "3E4CDF6B-3829-44D0-9675-71D7BE83CAA2"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D9F1DAD0-F8B8-48D5-B571-C55636B274C3",
"versionEndExcluding": "1.0.11.116"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r7000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "C9F86FF6-AB32-4E51-856A-DDE790C0A9A6"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r7100lg_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "133FB073-4947-4146-974D-65347F6FA178",
"versionEndExcluding": "1.0.0.70"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r7100lg:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "366FA778-3C2A-42AF-9141-DAD7043B406C"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r7000p_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EAF3EA40-79FB-4D2C-A8AF-A04820745C4D",
"versionEndExcluding": "1.3.2.132"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r7000p:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "DFE55F4D-E98B-46D3-B870-041141934CD1"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbs40v_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "3E56DEEC-4A36-4B33-951A-049D2582F7A4",
"versionEndExcluding": "2.6.2.8"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbs40v:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "F0D05F28-47A2-46AE-992E-132B34F6194B"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbw30_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D8EF8E22-9DC7-4A42-99E0-A6822F647DF7",
"versionEndExcluding": "2.6.2.2"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbw30:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "FEA73D22-970D-45F2-81F3-9576C04CCC94"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rs400_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "95AF0FA9-F2C5-4D84-BF37-AA8CB6EC3C4A",
"versionEndExcluding": "1.5.1.80"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rs400:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "2700644E-0940-4D05-B3CA-904D91739E58"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r6900p_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "839A9EBE-5F14-4695-8040-7D5607F8E248",
"versionEndExcluding": "1.3.2.132"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r6900p:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "C41908FF-AE64-4949-80E3-BEE061B2DA8A"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "cve@mitre.org"
}