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Findings

CVE-2026-34908

Ubiquiti UniFi OS Improper Access Control Vulnerability

Published May 21, 2026 · updated Jul 23, 2026 · Ubiquiti UniFi OS

Ubiquiti UniFi OS contains an improper access control vulnerability which could allow a malicious actor with access to the network to make unauthorized changes to the system.

Timeline

Detection, updates, and resolution for this record.

  1. May 21, 2026 · Catalog

    Detected

    Ubiquiti UniFi OS contains an improper access control vulnerability which could allow a malicious actor with access to the network to make unauthorized changes to the system.

  2. Jun 23, 2026 · CISA KEV

    Known exploited

    Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating

  3. Jun 26, 2026 · CISA KEV

    Remediation due

    Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating

  4. Jul 23, 2026 · Catalog

    Updated

    Ubiquiti UniFi OS contains an improper access control vulnerability which could allow a malicious actor with access to the network to make unauthorized changes to the system.

Required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

CISA due date Jun 26, 2026

Affected

  • cpe ui/enterprise fortress gateway firmwareversion unspecified
  • cpe ui/unifi cloud gateway industrial firmwareversion unspecified
  • cpe ui/unifi dream machine firmwareversion unspecified
  • cpe ui/unifi dream machine pro firmwareversion unspecified
  • cpe ui/unifi dream machine pro max firmwareversion unspecified
  • cpe ui/unifi dream machine special edition firmwareversion unspecified
  • cpe ui/unifi dream router 7 firmwareversion unspecified
  • cpe ui/unifi dream router firmwareversion unspecified
  • cpe ui/unifi dream wall firmwareversion unspecified
  • cpe ui/unifi express 7 firmwareversion unspecified
  • cpe ui/unifi network video recorder firmwareversion unspecified
  • cpe ui/unifi os serverversion unspecified
  • vendor Ubiquiti UniFi OSversion unspecified

Sources

  • CISA KEVCVE-2026-34908

    Ubiquiti UniFi OS contains an improper access control vulnerability which could allow a malicious actor with access to the network to make unauthorized changes to the system.

    cisa.gov
  • CVE.orgCVE-2026-34908

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2026-34908

    30-day exploitation probability 15.2%

    first.org
  • NIST NVDCVE-2026-34908

    A malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthorized changes to the system.

    nvd.nist.gov

References