CVE-2026-20122
Estado: AnalizadaMedia (5.4)⚠ Explotación activa
A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system.
This vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Puntuación base: 5.4
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 25%
- Percentil entre todas las CVEs puntuadas: 98
- Fecha de la puntuación: 1/10/2026
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
Tecnologías afectadas (1)
CWE
- CWE-648
Referencias
JSON original (NVD)
Mostrar
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}
],
"published": "2026-02-25T17:25:28.170",
"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-2026-20122",
"tags": [
"US Government Resource"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "psirt@cisco.com",
"description": [
{
"lang": "en",
"value": "CWE-648"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system.\r\n\r\nThis vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges."
},
{
"lang": "es",
"value": "Una vulnerabilidad en la API de Cisco Catalyst SD-WAN Manager podría permitir a un atacante remoto y autenticado sobrescribir archivos arbitrarios en el sistema de archivos local. Para explotar esta vulnerabilidad, el atacante debe tener credenciales válidas de solo lectura con acceso a la API en el sistema afectado.\n\nEsta vulnerabilidad se debe a un manejo inadecuado de archivos en la interfaz de la API de un sistema afectado. Un atacante podría explotar esta vulnerabilidad al cargar un archivo malicioso en el sistema de archivos local. Un exploit exitoso podría permitir al atacante sobrescribir archivos arbitrarios en el sistema afectado y obtener privilegios de usuario de vmanage."
}
],
"lastModified": "2026-06-17T10:17:09.043",
"cisaActionDue": "2026-04-23",
"cisaExploitAdd": "2026-04-20",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"criteria": "cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:*",
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"operator": "OR"
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],
"sourceIdentifier": "psirt@cisco.com",
"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 Incorrect Use of Privileged APIs Vulnerability"
}