CVE-2019-20748
Estado: ModificadaMedia (6.8)—
Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user. This affects D7800 before 1.0.1.44, R7500v2 before 1.0.3.38, R7800 before 1.0.2.52, RBK20 before 2.3.0.28, RBR20 before 2.3.0.28, RBS20 before 2.3.0.28, RBK40 before 2.3.0.28, RBS40 before 2.3.0.28, RBK50 before 2.3.0.32, RBR50 before 2.3.0.32, and RBS50 before 2.3.0.32.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 6.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.51%
- Percentil entre todas las CVEs puntuadas: 41
- 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-787
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2019-20748",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 5.2,
"accessVector": "ADJACENT_NETWORK",
"vectorString": "AV:A/AC:L/Au:S/C:P/I:P/A:P",
"authentication": "SINGLE",
"integrityImpact": "PARTIAL",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "PARTIAL"
},
"acInsufInfo": false,
"impactScore": 6.4,
"baseSeverity": "MEDIUM",
"obtainAllPrivilege": false,
"exploitabilityScore": 5.1,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "cve@mitre.org",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 6.8,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 0.9
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.8,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "HIGH",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 0.9
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2020-04-16T21:15:12.877",
"references": [
{
"url": "https://kb.netgear.com/000060963/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-WiFi-Systems-PSV-2018-0147",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "https://kb.netgear.com/000060963/Security-Advisory-for-Post-Authentication-Stack-Overflow-on-Some-Routers-Gateways-and-WiFi-Systems-PSV-2018-0147",
"tags": [
"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 authenticated user. This affects D7800 before 1.0.1.44, R7500v2 before 1.0.3.38, R7800 before 1.0.2.52, RBK20 before 2.3.0.28, RBR20 before 2.3.0.28, RBS20 before 2.3.0.28, RBK40 before 2.3.0.28, RBS40 before 2.3.0.28, RBK50 before 2.3.0.32, RBR50 before 2.3.0.32, and RBS50 before 2.3.0.32."
},
{
"lang": "es",
"value": "Determinados dispositivos NETGEAR están afectados por un desbordamiento del búfer en la región stack de la memoria por parte de un usuario autenticado. Esto afecta a D7800 versiones anteriores a 1.0.1.44, R7500v2 versiones anteriores a 1.0.3.38, R7800 versiones anteriores a 1.0.2.52, RBK20 versiones anteriores a 2.3.0.28, RBR20 versiones anteriores a 2.3.0. 28, RBS20 versiones anteriores a 2.3.0.28, RBK40 versiones anteriores a 2.3.0.28, RBS40 versiones anteriores a 2.3.0.28, RBK50 versiones anteriores a 2.3.0.32, RBR50 versiones anteriores a 2.3.0.32, y RBS50 versiones anteriores a 2.3.0.32."
}
],
"lastModified": "2026-06-17T02:31:06.913",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:d7800_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0A6C9089-563D-4345-90C7-D2D512382BF1",
"versionEndExcluding": "1.0.1.44"
}
],
"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": "536487B8-FF04-4526-BE91-44437256525C",
"versionEndExcluding": "1.0.3.38"
}
],
"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": "2C2195F1-18F6-4397-9D28-7A92003B7A76",
"versionEndExcluding": "1.0.2.52"
}
],
"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:rbk20_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "448D7EA1-A7BB-4AA5-8260-1D533D6A99AC",
"versionEndExcluding": "2.3.0.28"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbk20:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "E6C9F31C-3E12-4787-9C9B-14883D9D152A"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbr20_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1525B9D0-B147-437D-ACAE-58819A1F4FC6",
"versionEndExcluding": "2.3.0.28"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbr20:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "AE5DBD66-9C2A-4EFF-87AB-03E791D584B5"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbs20_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "4515F985-B714-480C-8FBA-2499A29F29FA",
"versionEndExcluding": "2.3.0.28"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbs20:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "14FC7F5B-7E4F-4A68-8427-D1F553EBE8CA"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbk40_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1CC5263E-71E4-4B63-AD77-D1E72DC704B0",
"versionEndExcluding": "2.3.0.28"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbk40:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "12DDD83C-6FF1-433F-ACA1-7B4B147F9A8C"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbs40_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "08426AC6-4811-43E8-87EB-204A2729C49B",
"versionEndExcluding": "2.3.0.28"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbs40:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "6FDCDE39-0355-43B9-BF57-F3718DA2988D"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbk50_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "BA9F2B44-4114-495A-B200-B703FDFC3F8F",
"versionEndExcluding": "2.3.0.32"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbk50:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "8BA66D07-D017-49D6-8E72-5C48E940DE1B"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbr50_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A25B8627-D325-493B-8B7D-4F900334F0D8",
"versionEndExcluding": "2.3.0.32"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbr50:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "B2CAEA32-6934-4743-9E6B-22D52AC5E7F8"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:netgear:rbs50_firmware:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "81ED6C61-2A7C-49EC-BD3D-466442EF715C",
"versionEndExcluding": "2.3.0.32"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:netgear:rbs50:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "3BCFD959-D522-4FA0-AD01-2937DAEE1EDF"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "cve@mitre.org"
}