CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-54403

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in certain devices running UniFi OS to bypass authentication of such UniFi OS devices or instances.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.005

EPSS Ranking 36.6%

CVSS Severity

CVSS v3 Score 8.6

References

https://community.ui.com/releases/Security-Advisory-Bulletin-066-066/984eceb3-49c8-4227-942d-671c289b3afc

Products affected by CVE-2026-54403

Ui » Unifi Os Server » Version: 4.3.6

cpe:2.3:a:ui:unifi_os_server:4.3.6
Ui » Unifi Os Server » Version: 5.0.6

cpe:2.3:a:ui:unifi_os_server:5.0.6
Ui » Unifi Os Server » Version: 5.0.8

cpe:2.3:a:ui:unifi_os_server:5.0.8
Ui » Unifi Os Server » Version: 5.1.15

cpe:2.3:a:ui:unifi_os_server:5.1.15
Ui » Enterprise Firewall Core » Version: N/A

cpe:2.3:h:ui:enterprise_firewall_core:-
Ui » Enterprise Fortress Gateway » Version: N/A

cpe:2.3:h:ui:enterprise_fortress_gateway:-
Ui » Enterprise Network Video Recorder » Version: N/A

cpe:2.3:h:ui:enterprise_network_video_recorder:-
Ui » Enterprise Network Video Recorder Core » Version: N/A

cpe:2.3:h:ui:enterprise_network_video_recorder_core:-
Ui » Unas 2 » Version: N/A

cpe:2.3:h:ui:unas_2:-
Ui » Unas 4 » Version: N/A

cpe:2.3:h:ui:unas_4:-
Ui » Unas Pro » Version: N/A

cpe:2.3:h:ui:unas_pro:-
Ui » Unas Pro 4 » Version: N/A

cpe:2.3:h:ui:unas_pro_4:-
Ui » Unas Pro 8 » Version: N/A

cpe:2.3:h:ui:unas_pro_8:-
Ui » Unifi Cloud Gateway Fiber » Version: N/A

cpe:2.3:h:ui:unifi_cloud_gateway_fiber:-
Ui » Unifi Cloud Gateway Industrial » Version: N/A

cpe:2.3:h:ui:unifi_cloud_gateway_industrial:-
Ui » Unifi Cloud Gateway Max » Version: N/A

cpe:2.3:h:ui:unifi_cloud_gateway_max:-
Ui » Unifi Cloud Gateway Ultra » Version: N/A

cpe:2.3:h:ui:unifi_cloud_gateway_ultra:-
Ui » Unifi Cloud Key Plus » Version: N/A

cpe:2.3:h:ui:unifi_cloud_key_plus:-
Ui » Unifi Cloudkey » Version: N/A

cpe:2.3:h:ui:unifi_cloudkey:-
Ui » Unifi Cloudkey Enterprise » Version: N/A

cpe:2.3:h:ui:unifi_cloudkey_enterprise:-
Ui » Unifi Dream Machine » Version: N/A

cpe:2.3:h:ui:unifi_dream_machine:-
Ui » Unifi Dream Machine Beast » Version: N/A

cpe:2.3:h:ui:unifi_dream_machine_beast:-
Ui » Unifi Dream Machine Pro » Version: N/A

cpe:2.3:h:ui:unifi_dream_machine_pro:-
Ui » Unifi Dream Machine Pro Max » Version: N/A

cpe:2.3:h:ui:unifi_dream_machine_pro_max:-
Ui » Unifi Dream Machine Special Edition » Version: N/A

cpe:2.3:h:ui:unifi_dream_machine_special_edition:-
Ui » Unifi Dream Router » Version: N/A

cpe:2.3:h:ui:unifi_dream_router:-
Ui » Unifi Dream Router 5g Max » Version: N/A

cpe:2.3:h:ui:unifi_dream_router_5g_max:-
Ui » Unifi Dream Router 7 » Version: N/A

cpe:2.3:h:ui:unifi_dream_router_7:-
Ui » Unifi Dream Wall » Version: N/A

cpe:2.3:h:ui:unifi_dream_wall:-
Ui » Unifi Express 7 » Version: N/A

cpe:2.3:h:ui:unifi_express_7:-
Ui » Unifi Network Video Recorder » Version: N/A

cpe:2.3:h:ui:unifi_network_video_recorder:-
Ui » Unifi Network Video Recorder G2 » Version: N/A

cpe:2.3:h:ui:unifi_network_video_recorder_g2:-
Ui » Unifi Network Video Recorder G2 Pro » Version: N/A

cpe:2.3:h:ui:unifi_network_video_recorder_g2_pro:-
Ui » Unifi Network Video Recorder Instant » Version: N/A

cpe:2.3:h:ui:unifi_network_video_recorder_instant:-
Ui » Unifi Network Video Recorder Pro » Version: N/A

cpe:2.3:h:ui:unifi_network_video_recorder_pro:-
Ui » Enterprise Firewall Core Firmware » Version: Any

cpe:2.3:o:ui:enterprise_firewall_core_firmware:*
Ui » Enterprise Fortress Gateway Firmware » Version: 5.1.12

cpe:2.3:o:ui:enterprise_fortress_gateway_firmware:5.1.12
Ui » Enterprise Network Video Recorder Core Firmware » Version: 5.1.12

cpe:2.3:o:ui:enterprise_network_video_recorder_core_firmware:5.1.12
Ui » Enterprise Network Video Recorder Firmware » Version: 5.1.12

cpe:2.3:o:ui:enterprise_network_video_recorder_firmware:5.1.12
Ui » Unas 2 Firmware » Version: 5.1.10

cpe:2.3:o:ui:unas_2_firmware:5.1.10
Ui » Unas 4 Firmware » Version: 5.1.10

cpe:2.3:o:ui:unas_4_firmware:5.1.10
Ui » Unas Pro 4 Firmware » Version: 5.1.10

cpe:2.3:o:ui:unas_pro_4_firmware:5.1.10
Ui » Unas Pro 8 Firmware » Version: 5.1.10

cpe:2.3:o:ui:unas_pro_8_firmware:5.1.10
Ui » Unas Pro Firmware » Version: 5.1.10

cpe:2.3:o:ui:unas_pro_firmware:5.1.10
Ui » Unifi Cloud Gateway Fiber Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_cloud_gateway_fiber_firmware:5.1.12
Ui » Unifi Cloud Gateway Industrial Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_cloud_gateway_industrial_firmware:5.1.12
Ui » Unifi Cloud Gateway Max Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_cloud_gateway_max_firmware:5.1.12
Ui » Unifi Cloud Gateway Ultra Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_cloud_gateway_ultra_firmware:5.1.12
Ui » Unifi Cloud Key Plus Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_cloud_key_plus_firmware:5.1.12
Ui » Unifi Cloudkey Enterprise Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_cloudkey_enterprise_firmware:5.1.12
Ui » Unifi Cloudkey Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_cloudkey_firmware:5.1.12
Ui » Unifi Dream Machine Beast Firmware » Version: 5.1.11

cpe:2.3:o:ui:unifi_dream_machine_beast_firmware:5.1.11
Ui » Unifi Dream Machine Firmware » Version: 1.5.6

cpe:2.3:o:ui:unifi_dream_machine_firmware:1.5.6
Ui » Unifi Dream Machine Firmware » Version: 1.8.3

cpe:2.3:o:ui:unifi_dream_machine_firmware:1.8.3
Ui » Unifi Dream Machine Firmware » Version: 1.8.4

cpe:2.3:o:ui:unifi_dream_machine_firmware:1.8.4
Ui » Unifi Dream Machine Firmware » Version: 1.8.5

cpe:2.3:o:ui:unifi_dream_machine_firmware:1.8.5
Ui » Unifi Dream Machine Firmware » Version: 1.8.6

cpe:2.3:o:ui:unifi_dream_machine_firmware:1.8.6
Ui » Unifi Dream Machine Firmware » Version: 1.9.0

cpe:2.3:o:ui:unifi_dream_machine_firmware:1.9.0
Ui » Unifi Dream Machine Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_dream_machine_firmware:5.1.12
Ui » Unifi Dream Machine Pro Firmware » Version: 1.6.4

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.6.4
Ui » Unifi Dream Machine Pro Firmware » Version: 1.6.5

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.6.5
Ui » Unifi Dream Machine Pro Firmware » Version: 1.6.6

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.6.6
Ui » Unifi Dream Machine Pro Firmware » Version: 1.7.0

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.7.0
Ui » Unifi Dream Machine Pro Firmware » Version: 1.7.2

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.7.2
Ui » Unifi Dream Machine Pro Firmware » Version: 1.8.0

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.8.0
Ui » Unifi Dream Machine Pro Firmware » Version: 1.8.3

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.8.3
Ui » Unifi Dream Machine Pro Firmware » Version: 1.8.4

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.8.4
Ui » Unifi Dream Machine Pro Firmware » Version: 1.8.5

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.8.5
Ui » Unifi Dream Machine Pro Firmware » Version: 1.8.6

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.8.6
Ui » Unifi Dream Machine Pro Firmware » Version: 1.9.0

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:1.9.0
Ui » Unifi Dream Machine Pro Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:5.1.12
Ui » Unifi Dream Machine Pro Max Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_dream_machine_pro_max_firmware:5.1.12
Ui » Unifi Dream Machine Special Edition Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_dream_machine_special_edition_firmware:5.1.12
Ui » Unifi Dream Router 5g Max Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_dream_router_5g_max_firmware:5.1.12
Ui » Unifi Dream Router 7 Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_dream_router_7_firmware:5.1.12
Ui » Unifi Dream Router Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_dream_router_firmware:5.1.12
Ui » Unifi Dream Wall Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_dream_wall_firmware:5.1.12
Ui » Unifi Express 7 Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_express_7_firmware:5.1.12
Ui » Unifi Network Video Recorder Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_network_video_recorder_firmware:5.1.12
Ui » Unifi Network Video Recorder G2 Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_network_video_recorder_g2_firmware:5.1.12
Ui » Unifi Network Video Recorder G2 Pro Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_network_video_recorder_g2_pro_firmware:5.1.12
Ui » Unifi Network Video Recorder Instant Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_network_video_recorder_instant_firmware:5.1.12
Ui » Unifi Network Video Recorder Pro Firmware » Version: 5.1.12

cpe:2.3:o:ui:unifi_network_video_recorder_pro_firmware:5.1.12

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-54403

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