Widely deployed network management component; unauthenticated remote take-over via default password could disrupt IT ops.
CVE-2026-33784
Unauthenticated attacker gains full control of Juniper vLWC via default password.
Is CVE-2026-33784 being exploited?
Not confirmed. CVE-2026-33784 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.46% probability of exploitation in the next 30 days.
How severe is CVE-2026-33784?
CVE-2026-33784 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-33784?
Yes. A fix has been recorded for CVE-2026-33784. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33784 affect?
CVE-2026-33784 affects Juniper Networks vLWC (Virtual Lightweight Collector), Juniper Support Insights (JSI). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33784?
Update to vLWC 3.0.94+ and enforce password rotation.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote full device takeover via default privileged account; unauthenticated network access.
Immediate action required
- affected< 3.0.94
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.