CVE-2026-21902— Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root

Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root

An Incorrect Permission Assignment for Critical Resource vulnerability in the On-Box Anomaly detection framework of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to execute code as root. The On-Box Anomaly detection framework should only be reachable by other internal processes over the internal routing instance, but not over an externally exposed port. With the ability to access and manipulate the service to execute code as root a remote attacker can take complete control of the device. Please note that this service is enabled by default as no specific configuration is required. This issue affects Junos OS Evolved on PTX Series: * 25.4 versions before 25.4R1-S1-EVO, 25.4R2-EVO. This issue does not affect Junos OS Evolved versions before 25.4R1-EVO. This issue does not affect Junos OS.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

关键资源的不正确权限授予

Juniper Networks Junos OS Evolved 安全漏洞

Juniper Networks Junos OS Evolved是美国瞻博网络（Juniper Networks）公司的Junos OS 的升级版系统。 Juniper Networks Junos OS Evolved on PTX Series 25.4R1-S1-EVO之前版本和25.4R2-EVO存在安全漏洞，该漏洞源于关键资源权限分配不当，可能导致远程攻击者以root权限执行代码。

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