CVE-2017-6742
Estado: AnalizadaAlta (8.8)⚠ Explotación activa
The vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system.
Only traffic directed to the affected system can be used to exploit this vulnerability.
Detalles técnicos trazas, registros y código del informe original
A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 21%
- Percentil entre todas las CVEs puntuadas: 98
- Fecha de la puntuación: 3/10/2026
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: 19/4/2023
- Plazo de remediación: 10/5/2023
- 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
T1210Exploitation of Remote Serviceslateral movement85 % - Impacto principal
T1059Command and Scripting Interpreterexecution85 % - Impacto secundario
T1499.004Application or System Exploitationimpact75 %
Buffer overflow en SNMP (CWE-119) permite RCE a atacante autenticado remoto. Vector AV:N/PR:L/AC:L indica explotación de servicio remoto con credenciales. Impacto: ejecución de código arbitrario (T1059) o recarga del sistema (DoS).
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 (2)
CWE
- CWE-119
- CWE-119
Referencias
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp
- http://www.securityfocus.com/bid/99345
- http://www.securitytracker.com/id/1038808
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6742
JSON original (NVD)
Mostrar
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"value": "A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device. \r\n\r\n\r\n\r\nThe vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system.\r\n\r\n\r\n\r\nOnly traffic directed to the affected system can be used to exploit this vulnerability."
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"value": "El protocolo SNMP (SimpleNetwork Management Protocol) de Cisco iOS 12.0 hasta la 12.4, 15.0 hasta la 15.6 e iOS XE 2.2 hasta la 3.17 contiene múltiples vulnerabilidades que pueden permitir una autenticación a un atacante remoto para ejecutar código remotamente en el sistema afectado o causar una recarga. Un atacante podría explotar estas vulnerabilidades enviando un paquete SNMP manipulado al sistema afectado mediante IPv4 o IPv6. Solo el tráfico directo al sistema afectado puede usarse para explotar estar vulnerabilidades. Esta vulnerabilidades son debidas a un buffer overflow en el subsistema SNMP del software afectado. Esta vulnerabilidad afecta a todas las versiones de SNMP: Versiones 1, 2c y 3. Para explotarlas en versiones 2c o anteriores, el atacante debe saber sobre la cadena comunitaria de solo lectura del SNMP del sistema afectado. Pra explotarlas en las versión 3, el atacante tiene que tener credenciales de usuario del sistema. Todos los dispositivos que tienen habilitado el SNMP y no tienen una exclusión explicita del MIB u OID afectado debe ser considerado vulnerable. Cisco Bug IDs: CSCve54313."
}
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"lastModified": "2026-06-17T01:22:56.160",
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