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TI-2026-39276 Aliases CVE-2026-54400GHSA-rwfh-5cw2-f7g6

Improper access control in Ubiquiti UniFi Access Application

Priority MEDIUM 42CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

A malicious actor with access to the network and high privileges could exploit an Improper Access Control vulnerability found in UniFi Access Application to escalate privileges on the host device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00524 44th percentileScored 2026-11-07
Fix Fixed UniFi Access Application (Ubiquiti Inc): 4.2.29

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UbiquitiUniFi Access Applicationbefore 4.2.294.2.29Patch availableCNA
  • UniFi Access Application VendorUbiquiti Affected before 4.2.29 Fixed in 4.2.29 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:ui:unifi_access:*:*:*:*:*:*:*:*before 4.2.29VulnerableUbiquiti
  • cpe:2.3:a:ui:unifi_access:*:*:*:*:*:*:*:* Versions before 4.2.29 Vulnerable ·Ubiquiti

Remediation

  • Fix · CNA UniFi Access Application (Ubiquiti Inc) Fixed in 4.2.29

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Ubiquiti UniFi Access Application 4.2.29

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2026-37411 Improper input validation in Ubiquiti UniFi Access ApplicationPriority MEDIUM 46
    • TI-2026-39815 Path traversal in Ubiquiti UniFi Access ApplicationPriority MEDIUM 44
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54400
  2. 2026-10-03 Alias added: GHSA-rwfh-5cw2-f7g6

References

Advisory 1

  • TI-2025-32744 Missing authentication in Ubiquiti UniFi Access Application CVSS 3.1CRITICAL 10.0
  • TI-2026-37411 Improper input validation in Ubiquiti UniFi Access Application CVSS 3.1CRITICAL 9.9
  • TI-2026-39815 Path traversal in Ubiquiti UniFi Access Application CVSS 3.1HIGH 8.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences