CVE-2023-20025
Estado: AnalizadaCrítica (9.8)—💥 PoC
A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthenticated, remote attacker to bypass authentication on an affected device.
This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to bypass authentication and gain root access on the underlying operating system.
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: 1.63%
- Percentil entre todas las CVEs puntuadas: 75
- 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).
💥 Exploits públicos
Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.
- Prueba de concepto en GitHub (no verificada) · Lista de pruebas de concepto en GitHub
⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.
Tecnologías afectadas (4)
CWE
- CWE-293
- CWE-290
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2023-20025",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2023-20025",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2024-10-28T16:19:30.025204Z"
}
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 9,
"attackVector": "NETWORK",
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "HIGH"
},
"impactScore": 6,
"exploitabilityScore": 2.2
},
{
"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": "psirt@cisco.com",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco Small Business RV Series Router Firmware",
"versions": [
{
"status": "affected",
"version": "2.0.0.19-tm"
},
{
"status": "affected",
"version": "2.0.2.01-tm"
},
{
"status": "affected",
"version": "1.3.12.19-tm"
},
{
"status": "affected",
"version": "1.3.12.6-tm"
},
{
"status": "affected",
"version": "1.3.13.02-tm"
},
{
"status": "affected",
"version": "1.3.9.8-tm"
},
{
"status": "affected",
"version": "4.0.0.7"
},
{
"status": "affected",
"version": "4.0.2.08-tm"
},
{
"status": "affected",
"version": "4.0.3.03-tm"
},
{
"status": "affected",
"version": "4.0.4.02-tm"
},
{
"status": "affected",
"version": "4.2.1.02"
},
{
"status": "affected",
"version": "4.2.2.08"
},
{
"status": "affected",
"version": "4.2.3.03"
},
{
"status": "affected",
"version": "4.2.3.06"
},
{
"status": "affected",
"version": "4.2.3.07"
},
{
"status": "affected",
"version": "4.2.3.08"
},
{
"status": "affected",
"version": "4.2.3.09"
},
{
"status": "affected",
"version": "4.2.3.10"
},
{
"status": "affected",
"version": "4.2.3.14"
},
{
"status": "affected",
"version": "3.0.0.1-tm"
},
{
"status": "affected",
"version": "3.0.0.19-tm"
},
{
"status": "affected",
"version": "3.0.2.01-tm"
},
{
"status": "affected",
"version": "4.1.1.01"
},
{
"status": "affected",
"version": "4.1.0.02-tm"
}
]
}
]
}
],
"published": "2023-01-20T07:15:14.490",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"source": "psirt@cisco.com"
},
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbr042-multi-vuln-ej76Pke5",
"tags": [
"Mitigation",
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-293"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-290"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthenticated, remote attacker to bypass authentication on an affected device.\r\n\r This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to bypass authentication and gain root access on the underlying operating system."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la interfaz de administración basada en web de los routers Cisco Small Business serie RV042 podría permitir que un atacante remoto no autenticado omita la autenticación en el dispositivo afectado. Esta vulnerabilidad se debe a una validación incorrecta de la entrada del usuario de los paquetes HTTP entrantes. Un atacante podría aprovechar esta vulnerabilidad enviando solicitudes manipuladas a la interfaz de administración basada en web. Un exploit exitoso podría permitir al atacante obtener privilegios de superusuario en el dispositivo afectado."
}
],
"lastModified": "2026-06-17T05:29:18.483",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:rv016_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "CCC05438-3064-4FB6-9177-9EA60C8E250C"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:rv016:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "701E3CF5-15C0-419A-97A8-9BD2C55D74AB"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:rv042_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F5A39236-B032-46BB-94D0-3E0E3E557BC0"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:rv042:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "2DCBB2D8-AACF-45EA-B9D4-DAECC7C792D1"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:rv042g_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E699C11F-3C7C-420D-9243-5CD2A6B98EF2"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:rv042g:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "F1CD7D9C-DDEF-4DF0-BCFB-A45301AE2C10"
}
],
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:rv082_firmware:-:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "9EF65E38-D812-4F6E-903C-05E203F3E9F6"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:cisco:rv082:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "24FC4446-22C0-4EC9-84B4-A76412680105"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "psirt@cisco.com"
}