CVE-2026-21915
JSI Virtual Lightweight Collector: Shell escape allows privilege escalation to root
CVSS Score
6.7
EPSS Score
0.0%
EPSS Percentile
10th
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.
| CWE | CWE-183 |
| Vendor | juniper networks |
| Product | jsi lwc |
| Published | Apr 9, 2026 |
| Last Updated | Apr 13, 2026 |
Stay Ahead of the Next One
Get instant alerts for juniper networks jsi lwc
Be the first to know when new medium vulnerabilities affecting juniper networks jsi lwc are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Juniper Networks / JSI LWC
0 < 3.0.94