CVE-2018-21211
Estado: ModificadaAlta (8.8)—
Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.67, D6000 before 1.0.0.67, D6100 before 1.0.0.56, D7800 before 1.0.1.30, R7500 before 1.0.0.118, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, WNDR4500v3 before 1.0.0.50, and WNR2000v5 before 1.0.0.62.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.76%
- Percentil entre todas las CVEs puntuadas: 54
- 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 (11)
CWE
- CWE-120
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2018-21211",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5.8,
"accessVector": "ADJACENT_NETWORK",
"vectorString": "AV:A/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": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 6.5,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 8.8,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.0/AV:A/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": 2.8
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.8,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:A/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": 2.8
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2020-04-28T16:15:13.950",
"references": [
{
"url": "https://kb.netgear.com/000055138/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2491",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://kb.netgear.com/000055138/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-and-Gateways-PSV-2017-2491",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-120"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.67, D6000 before 1.0.0.67, D6100 before 1.0.0.56, D7800 before 1.0.1.30, R7500 before 1.0.0.118, R7500v2 before 1.0.3.24, R7800 before 1.0.2.40, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, WNDR4500v3 before 1.0.0.50, and WNR2000v5 before 1.0.0.62."
},
{
"lang": "es",
"value": "Determinados dispositivos de NETGEAR están afectados por un desbordamiento del búfer por parte de un atacante no autenticado. Esto afecta a D3600 versiones anteriores a 1.0.0.67, D6000 versiones anteriores a 1.0.0.67, D6100 versiones anteriores a 1.0.0.56, D7800 versiones anteriores a 1.0.1.30, R7500 versiones anteriores a 1.0.0.118, R7500v2 versiones anteriores a 1.0.3.24, R7800 versiones anteriores a 1. 0.2.40, R9000 versiones anteriores a 1.0.2.52, WNDR3700v4 versiones anteriores a 1.0.2.96, WNDR4300 versiones anteriores a 1.0.2.98, WNDR4300v2 versiones anteriores a 1.0.0.50, WNDR4500v3 versiones anteriores a 1.0.0.50, y WNR2000v5 versiones anteriores a 1.0.0.62."
}
],
"lastModified": "2026-06-17T01:54:22.980",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d3600_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "47FB5F9D-2B33-44AD-BD57-164DF945ADA7",
"versionEndExcluding": "1.0.0.67"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:d3600:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "31DE9D4E-3CDC-4552-A63F-DD5D95E23F63"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d6000_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2089DF5E-598C-4CC2-B910-05C8D209A1BB",
"versionEndExcluding": "1.0.0.67"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:d6000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "6F6EA344-FF99-4F27-9860-3C5BE07345A7"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d6100_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1B5A756C-6CA4-46EF-80B8-9051FB607B43",
"versionEndExcluding": "1.0.0.56"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:d6100:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "7EFD1E86-F100-4E46-935D-903EB6FEFE9D"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d7800_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0173E81F-5BE3-4249-A620-EC36AD109D75",
"versionEndExcluding": "1.0.1.30"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:d7800:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "DA2D4987-3726-4A72-8D32-592F59FAC46D"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r7500_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7494430D-BA3F-4EDB-9FB8-7586D4457B9D",
"versionEndExcluding": "1.0.0.118"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r7500:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "EF3B3F26-401C-4ED0-B871-4B4F8521F369"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r7500_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C38F66ED-C53D-40F4-9F1E-96254BCD8A0C",
"versionEndExcluding": "1.0.3.24"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r7500:v2:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "2E0DFBF4-E393-44AE-AEF9-1B2059EE5AE8"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r7800_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A2E62164-2324-4AF2-B300-8005DAD433B6",
"versionEndExcluding": "1.0.2.40"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r7800:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "17CF7445-6950-45FE-9D1A-E23F63316329"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:r9000_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "679AAEA7-6415-4BBA-AE95-887C2CA609DC",
"versionEndExcluding": "1.0.2.52"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:r9000:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "D74F1BFC-562E-4E7D-BBAB-2F8B593B5A57"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:wndr3700_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "FAF6A089-4E7D-43D1-AF1F-01A7A592115E",
"versionEndExcluding": "1.0.2.96"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:wndr3700:v4:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "257A5E68-8EDC-44F5-A85C-83A91C93CCE5"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "EF96C0EB-8CB6-4C86-A9A2-A4C7AF58C97F",
"versionEndExcluding": "1.0.2.98"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:wndr4300:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "1413C591-D066-4FA2-BEB1-6C60F8645F28"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1425F7B0-0990-43F4-9621-8DAE8508FEED",
"versionEndExcluding": "1.0.0.50"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:wndr4300:v2:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "4428B145-B86D-4709-BBA9-64BDE7D35A25"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:wndr4500_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "81A6B7D4-1CBB-4D9E-8EB2-E5E82AFA59FA",
"versionEndExcluding": "1.0.0.50"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:wndr4500:v3:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "C31D6808-4103-4543-B7AB-84A79CD12006"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:wnr2000_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "27B33A47-E305-43CC-9AC2-C35DE8E51F02",
"versionEndExcluding": "1.0.0.62"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:wnr2000:v5:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "317F25FF-B3A2-4C68-888F-D2627C564867"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "cve@mitre.org"
}