CVE-2026-77551 — CRITICAL (9.0)

Vulnerability Description

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 Score

9.0

CRITICAL

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-284

References

https://community.ui.com/releases/Security-Advisory-Bulletin-067/fc4a3488-7c43-4

FAQ

What is CVE-2026-77551?

CVE-2026-77551 is a vulnerability with a CVSS score of 9.0 (CRITICAL). 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 d...

How severe is CVE-2026-77551?

CVE-2026-77551 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-77551?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.