CVSS: v3.1: 6.7 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H) CVSS: v4.0: 8.4 (CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/R:U/RE:M)
A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows a local, high privileged attacker to escalate their privileges to root.The CLI menu accepts input without carefully validating it, which allows for shell command injection. These shell commands are executed with root permissions and can be used to gain complete control of the system.This issue affects all JSI vLWC versions before 3.0.94.
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was seen during production usage.
The following software releases have been updated to resolve this specific issue: 3.0.94, and all subsequent releases.
This issue is being tracked as JDEF-980.
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.
2026-04-08: Initial Publication