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TI-2026-17615 Aliases CVE-2026-21915GHSA-r893-59mm-pxrg

JSI Virtual Lightweight Collector: Shell escape allows privilege escalation to root

Priority MEDIUM 43CWE-183Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02327 83rd percentileScored 2026-11-07
Fix Fixed JSI LWC (Juniper Networks): 3.0.94

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
JuniperJSI LWCbefore 3.0.943.0.94Patch availableCNA
  • JSI LWC VendorJuniper Affected before 3.0.94 Fixed in 3.0.94 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:juniper:virtual_lightweight_collector:*:*:*:*:*:*:*:*before 3.0.94VulnerableJuniper
  • cpe:2.3:a:juniper:virtual_lightweight_collector:*:*:*:*:*:*:*:* Versions before 3.0.94 Vulnerable ·Juniper

Remediation

  • Fix · CNA JSI LWC (Juniper Networks) Fixed in 3.0.94

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Juniper Networks JSI LWC 3.0.94

    2 records Highest priority Priority MEDIUM 2 MEDIUM

    Other records, highest priority first

    • TI-2026-26161 JSI Virtual Lightweight Collector: Default password is not required to be changed which…Priority MEDIUM 43
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21915
  2. 2026-10-03 Alias added: GHSA-r893-59mm-pxrg

References

Advisory 1

  • TI-2026-26161 JSI Virtual Lightweight Collector: Default password is not required to be changed which… CVSS 4.0CRITICAL 9.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences