Improper Input Validation in UniFi Access Application by Ubiquiti
CVE-2026-77547

9.9CRITICAL

Key Information:

Vendor

Ubiquiti Inc

Status
Unifi Access Application
Vendor
CVE Published:
26 August 2026

What is CVE-2026-77547?

A vulnerability exists in the UniFi Access Application from Ubiquiti, where insufficient input validation allows a malicious actor with low privileges to execute command injections on the host device. This flaw can be exploited by anyone with network access, posing a significant risk to the integrity and security of affected systems.

Affected Version(s)

UniFi Access Application 0 < 4.3.5

References

https://community.ui.com/releases/Security-Advisory-Bulle...

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.