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

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CVE-2026-34909

Severity CVSS v4.0:
Pending analysis
Type:
CWE-22 Path Traversal
Publication date:
22/05/2026
Last modified:
24/06/2026

Description

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an underlying account.

Impact

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

Base Score: 10.00 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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

Base Score 3.x
10.00
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:ui:unifi_os_server:*:*:*:*:*:*:*:* 5.0.8 (excluding)
cpe:2.3:o:ui:unifi_cloud_gateway_industrial_firmware:*:*:*:*:*:*:*:* 5.1.12 (excluding)
cpe:2.3:h:ui:unifi_cloud_gateway_industrial:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_machine_firmware:*:*:*:*:*:*:*:* 5.1.12 (excluding)
cpe:2.3:h:ui:unifi_dream_machine:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_machine_pro_firmware:*:*:*:*:*:*:*:* 5.1.12 (excluding)
cpe:2.3:h:ui:unifi_dream_machine_pro:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_machine_special_edition_firmware:*:*:*:*:*:*:*:* 5.1.12 (excluding)
cpe:2.3:h:ui:unifi_dream_machine_special_edition:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_machine_pro_max_firmware:*:*:*:*:*:*:*:* 5.1.12 (excluding)
cpe:2.3:h:ui:unifi_dream_machine_pro_max:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:enterprise_fortress_gateway_firmware:*:*:*:*:*:*:*:* 5.1.12 (excluding)
cpe:2.3:h:ui:enterprise_fortress_gateway:-:*:*:*:*:*:*:*
cpe:2.3:o:ui:unifi_dream_wall_firmware:*:*:*:*:*:*:*:* 5.1.12 (excluding)
cpe:2.3:h:ui:unifi_dream_wall:-:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools