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.
References
History

Mon, 13 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 10 Apr 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Juniper Networks
Juniper Networks jsi Lwc
Vendors & Products Juniper Networks
Juniper Networks jsi Lwc

Thu, 09 Apr 2026 21:45:00 +0000

Type Values Removed Values Added
Description 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.
Title JSI Virtual Lightweight Collector: Shell escape allows privilege escalation to root
Weaknesses CWE-183
References
Metrics cvssV3_1

{'score': 6.7, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.4, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published: 2026-04-09T21:26:28.357Z

Updated: 2026-04-13T13:04:16.101Z

Reserved: 2026-01-05T17:32:48.711Z

Link: CVE-2026-21915

cve-icon Vulnrichment

Updated: 2026-04-13T13:00:19.315Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-04-09T22:16:24.747

Modified: 2026-04-13T15:02:27.760

Link: CVE-2026-21915

cve-icon Redhat

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