CVE-2026-21915

MediumCVSS 6.7/10Last modified Jul 8, 2026

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.

Metrics

CVSS 3.1 6.7/10CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-183 CWE-78

Affected software

No affected versions have been published.

Timeline

Published: Apr 9, 2026
Last modified: Jul 8, 2026
NVD status: Analyzed

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