What is CVE-2026-77551?

CVE-2026-77551 is a critical-severity vulnerability in Ubiquiti Inc Unifi Connect Display Cast Pro, classified under Improper Access Control. CVSS score: 9.0/10. Published 2026-08-26.

How severe is CVE-2026-77551?

Critical severity. CVSS v3 base score is 9.0 out of 10.

Vulnerability in Ubiquiti Inc Unifi Connect Display Cast Pro

CVE-2026-77551

A malicious actor with access to the network and under certain conditions could exploit an Improper Access Control vulnerability found in UniFi Connect Display Cast Pro to escalate privileges on the device.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Ubiquiti Inc Unifi Connect Display Cast Pro

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

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Frequently asked questions

What is CVE-2026-77551?: CVE-2026-77551 is a critical-severity vulnerability in Ubiquiti Inc Unifi Connect Display Cast Pro, classified under Improper Access Control. CVSS score: 9.0/10. Published 2026-08-26.
How severe is CVE-2026-77551?: Critical severity. CVSS v3 base score is 9.0 out of 10.