Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-54403

Severity CVSS v4.0:
Pending analysis
Type:
CWE-22 Path Traversal
Publication date:
02/07/2026
Last modified:
10/07/2026

Description

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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 8.60 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x
8.60
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ui:unifi_os_server:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:o:ui:unifi_dream_machine_firmware:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:h:ui:unifi_dream_machine:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:h:ui:unifi_dream_machine_pro:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_machine_special_edition_firmware:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:h:ui:unifi_dream_machine_special_edition:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_machine_pro_max_firmware:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:h:ui:unifi_dream_machine_pro_max:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_machine_beast_firmware:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:h:ui:unifi_dream_machine_beast:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:enterprise_fortress_gateway_firmware:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:h:ui:enterprise_fortress_gateway:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_router_firmware:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:h:ui:unifi_dream_router:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools