CVE-2026-34908
Description
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.
How to fix
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- ui unifi_os_server5.0.8 or later
- ui unifi_cloud_gateway_industrial_firmware5.1.12 or later
- ui unifi_dream_machine_firmware5.1.12 or later
- ui unifi_dream_machine_pro_firmware5.1.12 or later
- ui unifi_dream_machine_special_edition_firmware5.1.12 or later
- ui unifi_dream_machine_pro_max_firmware5.1.12 or later
- ui enterprise_fortress_gateway_firmware5.1.12 or later
- ui unifi_dream_wall_firmware5.1.12 or later
- ui unifi_dream_router_firmware5.1.12 or later
- ui unifi_dream_router_7_firmware5.1.12 or later
- ui unifi_express_7_firmware5.1.12 or later
- ui unifi_network_video_recorder_firmware5.1.12 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ui unifi_os_server | v < 5.0.8 | 5.0.8 |
| ui unifi_cloud_gateway_industrial_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_machine_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_machine_pro_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_machine_special_edition_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_machine_pro_max_firmware | v < 5.1.12 | 5.1.12 |
| ui enterprise_fortress_gateway_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_wall_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_router_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_router_7_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_express_7_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_network_video_recorder_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_network_video_recorder_pro_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_network_video_recorder_instant_firmware | v < 5.1.12 | 5.1.12 |
| ui enterprise_network_video_recorder_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_cloud_gateway_ultra_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_cloud_gateway_max_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_cloud_gateway_fiber_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_router_5g_max_firmware | v < 5.1.12 | 5.1.12 |
| ui enterprise_network_video_recorder_core_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_cloud_key_plus_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_cloudkey_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_cloudkey_enterprise_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_network_video_recorder_g2_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_network_video_recorder_g2_pro_firmware | v < 5.1.12 | 5.1.12 |
| ui unifi_dream_machine_beast_firmware | v < 5.1.11 | 5.1.11 |
| ui unas_2_firmware | v < 5.1.10 | 5.1.10 |
| ui unas_4_firmware | v < 5.1.10 | 5.1.10 |
| ui unas_pro_firmware | v < 5.1.10 | 5.1.10 |
| ui unas_pro_4_firmware | v < 5.1.10 | 5.1.10 |
| ui unas_pro_8_firmware | v < 5.1.10 | 5.1.10 |
Check your version
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Attack Surface Management
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