CVE-2020-3349
Multiple vulnerabilities in the web-based management interface of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface on an affected device. These vulnerabilities are due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit these vulnerabilities by persuading a user of the interface to click a customized link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive browser-based information.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- Puntuación base: 4.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.62%
- Percentil entre todas las CVEs puntuadas: 48
- 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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1204.001Malicious Linkexecution - Impacto principal
T1059.007JavaScriptexecution - Impacto secundario
T1557Adversary-in-the-Middlecredential access · collection
Fuente: mapeo oficial MITRE CTID (CVE → ATT&CK).
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-79
- CWE-79
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2020-3349",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2020-3349",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2024-11-15T16:27:19.491299Z"
}
}
],
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 3.5,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
"authentication": "SINGLE",
"integrityImpact": "PARTIAL",
"accessComplexity": "MEDIUM",
"availabilityImpact": "NONE",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "LOW",
"obtainAllPrivilege": false,
"exploitabilityScore": 6.8,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": true
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"cvssData": {
"scope": "CHANGED",
"version": "3.0",
"baseScore": 4.8,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "HIGH",
"confidentialityImpact": "LOW"
},
"impactScore": 2.7,
"exploitabilityScore": 1.7
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "CHANGED",
"version": "3.1",
"baseScore": 4.8,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
"integrityImpact": "LOW",
"userInteraction": "REQUIRED",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "HIGH",
"confidentialityImpact": "LOW"
},
"impactScore": 2.7,
"exploitabilityScore": 1.7
}
]
},
"affected": [
{
"source": "psirt@cisco.com",
"affectedData": [
{
"vendor": "Cisco",
"product": "Cisco Data Center Network Manager",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2020-07-16T18:15:17.817",
"references": [
{
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dncm-xss-AvMyAwd2",
"tags": [
"Vendor Advisory"
],
"source": "psirt@cisco.com"
},
{
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dncm-xss-AvMyAwd2",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-79"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-79"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Multiple vulnerabilities in the web-based management interface of Cisco Data Center Network Manager (DCNM) could allow an authenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the interface on an affected device. These vulnerabilities are due to insufficient validation of user-supplied input by the web-based management interface. An attacker could exploit these vulnerabilities by persuading a user of the interface to click a customized link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or access sensitive browser-based information."
},
{
"lang": "es",
"value": "Múltiples vulnerabilidades en la interfaz de administración basada en web de Cisco Data Center Network Manager (DCNM) podrían permitir a un atacante remoto autenticado conducir un ataque de tipo cross-site scripting (XSS) contra un usuario de la interfaz en un dispositivo afectado. Estas vulnerabilidades son debido a una comprobación de entrada insuficiente suministrada por un usuario mediante la interfaz de administración basada en web. Un atacante podría explotar estas vulnerabilidades al persuadir a un usuario de la interfaz para que haga clic en un enlace personalizado. Una explotación con éxito podría permitir a un atacante ejecutar código script arbitrario en el contexto de la interfaz o acceder a información confidencial basada en navegador"
}
],
"lastModified": "2026-06-17T03:18:03.087",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:cisco:data_center_network_manager:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C1304640-C408-4C06-861C-713F4F4F5140",
"versionEndExcluding": "11.4\\(1\\)"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "psirt@cisco.com"
}