CVSS: v3.1: 8.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) CVSS: v4.0: 6.3 (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H/AU:Y/R:U/RE:M)
A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on MX Series allows a local, authenticated user with low privileges to execute specific commands which will lead to a complete compromise of managed devices.Any user logged in, without requiring specific privileges, can issue 'request csds' CLI operational commands. These commands are only meant to be executed by high privileged or users designated for Juniper Device Manager (JDM) / Connected Security Distributed Services (CSDS) operations as they will impact all aspects of the devices managed via the respective MX.
This issue affects Junos OS on MX Series:
This issue does not affect Junos OS releases before 24.4.
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was found during internal product security testing or research.
The following software releases have been updated to resolve this specific issue: 24.4R2-S3, 25.2R2, 25.4R1, and all subsequent releases.
This issue is being tracked as 1914935 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.Utilize CLI authorization to disallow execution of the 'request csds' commands.
2026-04-08: Initial Publication