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CVE-2026-48694

Estado: AnalizadaAlta (8.1)—

FastNetMon Community Edition through 1.2.9 contains a configuration injection vulnerability in the Juniper router integration plugin. In src/juniper_plugin/fastnetmon_juniper.php, the $IP_ATTACK variable (received from argv[1]) is directly interpolated into Juniper NETCONF set-configuration commands at lines 69 and 90 without any validation or sanitization. Line 69: $conn->load_set_configuration("set routing-options static route {$IP_ATTACK} community 65535:666 discard"). Line 90: $conn->load_set_configuration("delete routing-options static route {$IP_ATTACK}/32").

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An attacker who can control the IP address string can inject additional Juniper CLI configuration commands by embedding newline characters followed by arbitrary set/delete commands. This could modify the router's routing table, firewall filters, user accounts, or any other configuration element accessible via NETCONF. The impact is full router compromise.

CVSS

Probabilidad de explotación (EPSS)

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.

Vulnerabilidad de inyección en plugin NETCONF (acceso remoto con privilegios PR:L). Permite inyectar comandos CLI arbitrarios en router Juniper modificando configuración (routing, firewall, cuentas), logrando compromiso total del dispositivo.

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

Threat Intelligence ProgramPrivileged Account ManagementExecution PreventionDisable or Remove Feature or ProgramApplication Isolation and SandboxingExploit Protection

Tecnologías afectadas (1)

Pavel-odintsov — Fastnetmon

CWE

Referencias

JSON original (NVD)

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      "value": "FastNetMon Community Edition through 1.2.9 contains a configuration injection vulnerability in the Juniper router integration plugin. In src/juniper_plugin/fastnetmon_juniper.php, the $IP_ATTACK variable (received from argv[1]) is directly interpolated into Juniper NETCONF set-configuration commands at lines 69 and 90 without any validation or sanitization. Line 69: $conn->load_set_configuration(\"set routing-options static route {$IP_ATTACK} community 65535:666 discard\"). Line 90: $conn->load_set_configuration(\"delete routing-options static route {$IP_ATTACK}/32\"). An attacker who can control the IP address string can inject additional Juniper CLI configuration commands by embedding newline characters followed by arbitrary set/delete commands. This could modify the router's routing table, firewall filters, user accounts, or any other configuration element accessible via NETCONF. The impact is full router compromise."
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      "value": "FastNetMon Community Edition hasta la 1.2.9 contiene una vulnerabilidad de inyección de configuración en el plugin de integración del router Juniper. En src/juniper_plugin/fastnetmon_juniper.php, la variable $IP_ATTACK (recibida de argv[1]) se interpola directamente en los comandos de configuración 'set' de Juniper NETCONF en las líneas 69 y 90 sin ninguna validación o saneamiento. Línea 69: $conn -> load_set_configuration(\"set routing-options static route {$IP_ATTACK} community 65535:666 discard\"). Línea 90: $conn -> load_set_configuration(\"delete routing-options static route {$IP_ATTACK}/32\"). Un atacante que puede controlar la cadena de la dirección IP puede inyectar comandos de configuración CLI de Juniper adicionales incrustando caracteres de nueva línea seguidos de comandos 'set'/'delete' arbitrarios. Esto podría modificar la tabla de enrutamiento del router, los filtros del cortafuegos, las cuentas de usuario o cualquier otro elemento de configuración accesible a través de NETCONF. El impacto es el compromiso total del router."
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