Unauthenticated attacker can hijack admin sessions in a widely used Dell VSI plugin for VMware vSphere, risking full impersonation and control of virtualization management.
CVE-2026-54489
Unauthenticated info disclosure and session hijack in Dell VSI for vSphere (<10.11.1.0).
Is CVE-2026-54489 being exploited?
Not confirmed. CVE-2026-54489 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 0.47% probability of exploitation in the next 30 days.
How severe is CVE-2026-54489?
CVE-2026-54489 is rated Critical with a CVSS score of 9.1. 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-2026-54489?
Yes. A fix has been recorded for CVE-2026-54489. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-54489 affect?
CVE-2026-54489 affects Dell Virtual Storage Integrator (VSI) for VMware vSphere Client < 10.11.1.0, VMware vSphere Client environments using Dell VSI. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-54489?
Upgrade VSI to >=10.11.1.0, rotate credentials and invalidate existing sessions.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote attacker can steal active session credentials and fully impersonate authenticated users, including administrators.
Immediate action required
- affected< 10.11.1.0 or later
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.