CVE-2026-57024
Full vulnerability record from the local CVENow database.
Description
A Use of Multiple Resources with Duplicate Identifier vulnerability in the IKE daemon (iked) of Juniper Networks Junos OS on MX with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). On an MX with SPC3 and SRX devices configured for VPN service, when a large number of VPN negotiations fail a peer index rollover will eventually occur. As a result, new peers are assigned index values that are already in use and the iked process starts to crash repeatedly. This results in failure to establish new VPN connections and rekeying existing ones. To restore service the system must be rebooted. Please note that the index value can't be monitored, so customers should monitor tunnel up and down events and if a lot of events occur over an extended period of time it becomes likely that this issue occurs. To be exposed to this issue the system needs to run iked (vs. kmd which is not affected), which can be verified with: user@host> show system processes extensive | match "KMD|IKED" This issue affects Junos OS on MX with SPC3, SRX Series: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S6, * 24.2 versions before 24.2R2-S3, * 24.4 versions before 24.4R2-S4, * 25.2 versions before 25.2R1-S1.
Severity
MEDIUM
CVSS score
6.9
(v4.0)
Vulnerability status
Analyzed
Source identifier
Published
2026-07-09 22:17:07.553000
Last modified
2026-10-25 15:10:00.147000
View original CVE JSON
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"sourceIdentifier": "[email protected]",
"published": "2026-07-09T22:17:07.553",
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"value": "A Use of Multiple Resources with Duplicate Identifier vulnerability in the IKE daemon (iked) of Juniper Networks Junos OS on MX with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\nOn an MX with SPC3 and SRX devices configured for VPN service, when a large number of VPN negotiations fail a peer index rollover will eventually occur. As a result, new peers are assigned index values that are already in use and the iked process starts to crash repeatedly. This results in failure to establish new VPN connections and rekeying existing ones. To restore service the system must be rebooted.\nPlease note that the index value can't be monitored, so customers should monitor tunnel up and down events and if a lot of events occur over an extended period of time it becomes likely that this issue occurs.\n\nTo be exposed to this issue the system needs to run iked (vs. kmd which is not affected), which can be verified with:\n\nuser@host> show system processes extensive | match \"KMD|IKED\"\nThis issue affects Junos OS on MX with SPC3, SRX Series:\n\n\n * all versions before 23.2R2-S7,\n * 23.4 versions before 23.4R2-S6,\n * 24.2 versions before 24.2R2-S3,\n * 24.4 versions before 24.4R2-S4,\n * 25.2 versions before 25.2R1-S1."
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"value": "Una vulnerabilidad de uso de múltiples recursos con identificador duplicado en el demonio IKE (iked) de Juniper Networks Junos OS en MX con SPC3 y SRX Series permite a un atacante no autenticado y basado en red causar una denegación de servicio (DoS).\n\nEn dispositivos MX con SPC3 y SRX configurados para servicio VPN, cuando un gran número de negociaciones VPN fallan, eventualmente ocurrirá un desbordamiento del índice de pares. Como resultado, a los nuevos pares se les asignan valores de índice que ya están en uso y el proceso iked comienza a fallar repetidamente. Esto resulta en la imposibilidad de establecer nuevas conexiones VPN y de renegociar las claves de las existentes. Para restaurar el servicio, el sistema debe ser reiniciado.\nTenga en cuenta que el valor del índice no puede ser monitoreado, por lo que los clientes deben monitorear los eventos de activación y desactivación de túneles y, si ocurren muchos eventos durante un período de tiempo prolongado, es probable que este problema ocurra.\n\nPara estar expuesto a este problema, el sistema necesita ejecutar iked (a diferencia de kmd, que no se ve afectado), lo cual puede verificarse con:\n\nuser@host> show system processes extensive | match “KMD|IKED”\nEste problema afecta a Junos OS en MX con SPC3, SRX Series:\n\n * todas las versiones anteriores a 23.2R2-S7,\n * versiones 23.4 anteriores a 23.4R2-S6,\n * versiones 24.2 anteriores a 24.2R2-S3,\n * versiones 24.4 anteriores a 24.4R2-S4,\n * versiones 25.2 anteriores a 25.2R1-S1."
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"vulnerable": false,
"criteria": "cpe:2.3:h:juniper:srx5600:-:*:*:*:*:*:*:*",
"matchCriteriaId": "68CA098D-CBE4-4E62-9EC0-43E1B6098710"
},
{
"vulnerable": false,
"criteria": "cpe:2.3:h:juniper:srx5800:-:*:*:*:*:*:*:*",
"matchCriteriaId": "66F474D4-79B6-4525-983C-9A9011BD958B"
}
]
}
]
}
],
"references": [
{
"url": "https://supportportal.juniper.net/JSA110084",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
}
]
}