CVE-2026-33784

CRITICAL

Juniper JSI Virtual Lightweight Collector <3.0.94 - Default Password Full Device Access

Title source: manual

Description

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.

References (1)

Core 1

Core References

Vendor Advisory vendor-advisory

https://kb.juniper.net/JSA107871

Scores

CVSS v3 9.8

EPSS 0.0046

EPSS Percentile 36.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-1393

Status published

Products (2)

juniper/virtual_lightweight_collector < 3.0.94

Juniper Networks/JSI LWC < 3.0.94

Published Apr 09, 2026

Tracked Since Apr 10, 2026