CVE-2026-20128
Estado: AnalizadaAlta (7.5)⚠ Explotación activa
A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system.
This vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges. Note: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Puntuación base: 7.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 7.06%
- Percentil entre todas las CVEs puntuadas: 94
- 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).
CISA KEV — explotada activamente
- Añadida al catálogo: 20/4/2026
- Plazo de remediación: 23/4/2026
- Uso conocido en ransomware: Unknown
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1212Exploitation for Credential Accesscredential access85 % - Impacto principal
T1078.001Default Accountsstealth · persistence · privilege escalation · initial access80 % - Impacto secundario
T1552.001Credentials In Filescredential access90 %
CVE-2026-20128 permite leer un archivo de credenciales del usuario DCA mediante solicitud HTTP, obteniendo contraseñas almacenadas (T1552.001) para acceso lateral con privilegios DCA (T1078.001). Aunque el vector indica AV:L, el texto describe obtención remota de credenciales vía HTTP, clasificado c
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-257
Referencias
JSON original (NVD)
Mostrar
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"published": "2026-02-25T17:25:30.150",
"references": [
{
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-authbp-qwCX8D4v",
"tags": [
"Vendor Advisory"
],
"source": "psirt@cisco.com"
},
{
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-20128",
"tags": [
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"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
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"vulnStatus": "Analyzed",
"weaknesses": [
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"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-257"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the Data Collection Agent (DCA) feature of Cisco Catalyst SD-WAN Manager could allow an unauthenticated, remote attacker to gain DCA user privileges on an affected system.\r\n\r\nThis vulnerability is due to the presence of a credential file for the DCA user on an affected system. An attacker could exploit this vulnerability by sending a crafted HTTP request and reading the file that contains the DCA password from that affected system. A successful exploit could allow the attacker to access another affected system and gain DCA user privileges.\r\nNote: Cisco Catalyst SD-WAN Manager releases 20.18 and later are not affected by this vulnerability."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la función de Agente de Recopilación de Datos (DCA) de Cisco Catalyst SD-WAN Manager podría permitir a un atacante local autenticado obtener privilegios de usuario de DCA en un sistema afectado. Para explotar esta vulnerabilidad, el atacante debe tener credenciales válidas de vmanage en el sistema afectado.\n\nEsta vulnerabilidad se debe a la presencia de un archivo de credenciales para el usuario de DCA en un sistema afectado. Un atacante podría explotar esta vulnerabilidad al acceder al sistema de archivos como un usuario con privilegios bajos y leer el archivo que contiene la contraseña de DCA de ese sistema afectado. Un exploit exitoso podría permitir al atacante acceder a otro sistema afectado y obtener privilegios de usuario de DCA.\nNota: Las versiones 20.18 y posteriores de Cisco Catalyst SD-WAN Manager no se ven afectadas por esta vulnerabilidad."
}
],
"lastModified": "2026-06-17T10:17:10.543",
"cisaActionDue": "2026-04-23",
"cisaExploitAdd": "2026-04-20",
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"cisaRequiredAction": "Please adhere to CISA’s guidelines to assess exposure and mitigate risks associated with Cisco SD-WAN devices as outlines in CISA’s Emergency Directive 26-03 (URL listed below in Notes) and CISA’s “Hunt & Hardening Guidance for Cisco SD-WAN Devices (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.",
"cisaVulnerabilityName": "Cisco Catalyst SD-WAN Manager Storing Passwords in a Recoverable Format Vulnerability"
}