PatchTheCVECVE-2026-33784: A Use of Default Password vulnerability in the Juniper Networks Support Insights (JSI) Virtual Lightweight
CVE-2026-33784 is a critical-severity flaw (CVSS 9.8) affecting virtual lightweight collector. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 possib
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 61%) |
| CISA exploited list | No |
| Weakness | CWE-1393 |
| Published | 2026-04-09 |
| Last modified | 2026-10-26 |
Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-33784?
virtual lightweight collector: upgrade to 3.0.94. Exact commands for each OS are on this page.
Is CVE-2026-33784 being exploited?
CVE-2026-33784 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-33784 affect?
CVE-2026-33784 affects virtual lightweight collector. Severity is critical (CVSS 9.8). 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
How urgent is CVE-2026-33784?
Priority 49/100. Critical severity; Remotely exploitable, no login, no user action
Software pages
Related CVEs
- CVE-2026-21915 MEDIUM 6.7 UPGRADE A Permissive List of Allowed Input vulnerability in the CLI of Juniper Networks Support Insights (JSI) Virtual