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

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CVE-2026-55110

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
02/07/2026
Last modified:
09/07/2026

Description

A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (CORS) misconfiguration found in UniFi OS to trigger actions in UniFi OS using that user's session.

Impact

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

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

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

Base Score 3.x
7.50
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_beast_firmware:*:*:*:*:*:*:*:* 5.1.15 (including)
cpe:2.3:h:ui:unifi_dream_machine_beast:-:*:*:*:*:*:*:*
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