A Missing Authorization vulnerability in the internal virtual routing and forwarding (VRF) of Juniper Networks Junos OS Evolved allows a local, low-privileged user to gain root privileges, leading to a system compromise.

Any low-privileged user with the capability to send packets over the internal VRF can execute arbitrary Junos commands and modify the configuration, and thus compromise the system. 

This issue affects Junos OS Evolved: 

• All versions before 22.2R3-S7-EVO, 
• from 22.4 before 22.4R3-S7-EVO, 
• from 23.2 before 23.2R2-S4-EVO, 
• from 23.4 before 23.4R2-S5-EVO, 
• from 24.2 before 24.2R2-S1-EVO
• from 24.4 before 24.4R1-S2-EVO, 24.4R2-EVO.

The following software releases have been updated to resolve this specific issue:

Junos OS Evolved: 22.2R3-S7-EVO, 22.4R3-S7-EVO, 23.2R2-S4-EVO, 23.4R2-S5-EVO, 24.2R2-S1-EVO, 24.4R1-S2-EVO, 24.4R2-EVO, 25.2R1-EVO and all subsequent releases.

This issue is being tracked as 1765490 which is visible on the Customer Support website.

Note: Juniper SIRT's policy is not to evaluate releases which are beyond End of Engineering (EOE) or End of Life (EOL).

Use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators.

Grant shell and network permissions only to trusted users.

2025-07-09: Initial Publication

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Security Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• https://www.cve.org/CVERecord?id=CVE-2025-52954