CVE-2026-33784 CRITICAL

CVE-2026-33784: JSI Virtual Lightweight Collector: Default password is not required to be changed which allows unauthorized high-privileged access

Vendor Juniper Networks
Product JSI LWC
Weakness CWE-1393
Published April 9, 2026
Last update April 13, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 9, 2026 CVE published
April 13, 2026 Record updated