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TI-2026-54073 Aliases CVE-2026-77553GHSA-j8qp-54h8-7fm6

Improper access control in Ubiquiti UniFi Access Application

Priority MEDIUM 43CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
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 low 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 0.00468 40th percentileScored 2026-11-07
Fix Fixed UniFi Access Application (Ubiquiti Inc): 4.3.5

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 4.3.54.3.5Patch availableCNA
  • UniFi Access Application VendorUbiquiti Affected before 4.3.5 Fixed in 4.3.5 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:ui:unifi_access:*:*:*:*:*:*:*:*——Ubiquiti
  • cpe:2.3:a:ui:unifi_access:*:*:*:*:*:*:*:* Versions — — ·Ubiquiti

Remediation

  • Fix · CNA UniFi Access Application (Ubiquiti Inc) Fixed in 4.3.5

Fixed in the same release

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

  • Release ·

    Ubiquiti UniFi Access Application 4.3.5

    4 records Highest priority Priority MEDIUM 4 MEDIUM

    Other records, highest priority first

    • TI-2026-54067 Improper input validation in Ubiquiti UniFi Access ApplicationPriority MEDIUM 46
    • TI-2026-54066 Improper input validation in Ubiquiti UniFi Access ApplicationPriority MEDIUM 46
    • TI-2026-54063 Improper input validation in Ubiquiti UniFi Access ApplicationPriority MEDIUM 46
    Show all 4 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77553
  2. 2026-10-03 Alias added: GHSA-j8qp-54h8-7fm6

References

Other 1

  • TI-2026-27142 Improper input validation in Ubiquiti UniFi OS Server KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-27141 Path traversal in Ubiquiti UniFi OS Server KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-27140 Improper access control in Ubiquiti UniFi OS Server KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-05027 On certain Ubiquiti devices, Command Injection exists via a GET request to stainfo.cgi… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-19187 AirControl 1.4.2 - PreAuth Remote Code Execution CVSS 4.0CRITICAL 9.3
  • TI-2015-07644 Ubiquiti airOS HTTP(S) unauthenticated arbitrary file upload CVSS 3.0CRITICAL 9.8
See all 206 →

Sources

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