Input Validation Flaw in Juniper Networks Support Insights Product
CVE-2026-21915

8.4HIGH

Key Information:

Vendor

Juniper Networks
Status
Jsi Lwc
Vendor
CVE Published:
9 April 2026

Badges

👾 Exploit Exists

What is CVE-2026-21915?

A vulnerability exists in the Command Line Interface (CLI) of Juniper Networks Support Insights Virtual Lightweight Collector (vLWC) that allows a local attacker with high privileges to escalate their access to root. The CLI fails to adequately validate inputs, making it susceptible to shell command injection. This allows unauthorized commands to be executed with root-level permissions, potentially compromising the entire system. This issue impacts all JSI vLWC versions prior to 3.0.94.

Affected Version(s)

JSI LWC vLWC 0 < 3.0.94

References

https://kb.juniper.net/JSA106016
vendor-advisory

CVSS V4

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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