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CVE-2026-33784

CRITICAL CVSS 4.0: 9.3
Updated Apr 09, 2026
Juniper
Parameter Value
CVSS 9.3 (CRITICAL)
Affected Versions before 3.0.94.
Type CWE-1393 (Use of Default Password)
Vendor Juniper
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0