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4 vulnerabilities found for JSI LWC by Juniper Networks

CVE-2026-33784 (GCVE-0-2026-33784)

Vulnerability from nvd – Published: 2026-04-09 21:36 – Updated: 2026-04-09 21:36
VLAI?
Title
JSI Virtual Lightweight Collector: Default password is not required to be changed which allows unauthorized high-privileged access
Summary
A Use of Default Password vulnerability in the Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-based attacker to take full control of the device. vLWC software images ship with an initial password for a high privileged account. A change of this password is not enforced during the provisioning of the software, which can make full access to the system by unauthorized actors possible.This issue affects all versions of vLWC before 3.0.94.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:L
CWE
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks JSI LWC Affected: 0 , < 3.0.94 (semver)
Create a notification for this product.
Date Public ?
2026-04-08 16:00
Show details on NVD website
To clipboard 

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CVE-2026-21915 (GCVE-0-2026-21915)

Vulnerability from nvd – Published: 2026-04-09 21:26 – Updated: 2026-04-10 03:56
VLAI?
Title
JSI Virtual Lightweight Collector: Shell escape allows privilege escalation to root
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.
Severity ?
6.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.4 (High)
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
CWE
  • CWE-183 - Permissive List of Allowed Input
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks JSI LWC Affected: 0 , < 3.0.94 (semver)
Create a notification for this product.
Date Public ?
2026-04-08 16:00
Show details on NVD website
To clipboard 

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CVE-2026-33784 (GCVE-0-2026-33784)

Vulnerability from cvelistv5 – Published: 2026-04-09 21:36 – Updated: 2026-04-09 21:36
VLAI?
Title
JSI Virtual Lightweight Collector: Default password is not required to be changed which allows unauthorized high-privileged access
Summary
A Use of Default Password vulnerability in the Juniper Networks Support Insights (JSI) Virtual Lightweight Collector (vLWC) allows an unauthenticated, network-based attacker to take full control of the device. vLWC software images ship with an initial password for a high privileged account. A change of this password is not enforced during the provisioning of the software, which can make full access to the system by unauthorized actors possible.This issue affects all versions of vLWC before 3.0.94.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:L
CWE
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks JSI LWC Affected: 0 , < 3.0.94 (semver)
Create a notification for this product.
Date Public ?
2026-04-08 16:00
Show details on NVD website
To clipboard 

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CVE-2026-21915 (GCVE-0-2026-21915)

Vulnerability from cvelistv5 – Published: 2026-04-09 21:26 – Updated: 2026-04-10 03:56
VLAI?
Title
JSI Virtual Lightweight Collector: Shell escape allows privilege escalation to root
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.
Severity ?
6.7 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.4 (High)
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
CWE
  • CWE-183 - Permissive List of Allowed Input
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks JSI LWC Affected: 0 , < 3.0.94 (semver)
Create a notification for this product.
Date Public ?
2026-04-08 16:00
Show details on NVD website
To clipboard 

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