CVE-2026-57032
Full vulnerability record from the local CVENow database.
Description
An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices allows an authenticated attacker with low privileges to cause a Denial-of-Service (DoS). If an attempt is made to subscribe to an unsupported telemetry sensor path on EX2300, EX3400, EX4000, EX4100 and EX4400 via gRPC, this causes the FPC to crash. This leads to a complete service outage until the module has automatically restarted. The following log message can be seen when this issue happens: agentd[<PID>]: AGENTD_RESOURCE_NOT_FOUND: No resource name found for <sensor> This issue affects Junos OS on EX2300, EX3400, EX4000, EX4100 and EX4400 devices: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S5, * 24.4 versions before 24.4R2.
Severity
HIGH
CVSS score
7.1
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-07-09 22:17:09.007000
Last modified
2026-10-25 15:10:00.147000
View original CVE JSON
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"sourceIdentifier": "[email protected]",
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"value": "Una vulnerabilidad de manejo inadecuado de parámetros indefinidos en el motor de reenvío de paquetes (pfe) de Juniper Networks Junos OS en dispositivos de la serie EX permite a un atacante autenticado con privilegios bajos causar una denegación de servicio (DoS).\n\nSi se intenta suscribirse a una ruta de sensor de telemetría no compatible en EX2300, EX3400, EX4000, EX4100 y EX4400 a través de gRPC, esto provoca que el FPC falle. Esto conduce a una interrupción completa del servicio hasta que el módulo se haya reiniciado automáticamente.\n\nSe puede ver el siguiente mensaje de registro cuando ocurre este problema:\n\nagentd[[PID]]: AGENTD_RESOURCE_NOT_FOUND: No se encontró nombre de recurso para [sensor]\n\nEste problema afecta a Junos OS en\n\ndispositivos EX2300, EX3400, EX4000, EX4100 y EX4400:\n\n * todas las versiones anteriores a 23.2R2-S7,\n * versiones 23.4 anteriores a 23.4R2-S8,\n * versiones 24.2 anteriores a 24.2R2-S5,\n * versiones 24.4 anteriores a 24.4R2."
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