What is CVE-2026-33784?

CVE-2026-33784 is a critical-severity vulnerability in Juniper Virtual_lightweight_collector, classified under CWE-1393. CVSS score: 9.8/10. Published 2026-04-09.

How severe is CVE-2026-33784?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Juniper Virtual_lightweight_collector

CVE-2026-33784

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 shi…

EPSS: 0.005 (36.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Juniper Virtual_lightweight_collector
Juniper Networks Jsi Lwc — versions 0

Weakness classification (CWE)

CWE-1393

References

sirt@juniper.net (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-33784?: CVE-2026-33784 is a critical-severity vulnerability in Juniper Virtual_lightweight_collector, classified under CWE-1393. CVSS score: 9.8/10. Published 2026-04-09.
How severe is CVE-2026-33784?: Critical severity. CVSS v3 base score is 9.8 out of 10.