---
id: CVE-2026-110124
title: >-
  FastBee through 2.1.0 contains an insecure direct object reference
  vulnerability in DeviceController that allows authenticated low-privilege
  users to read and modify other tenants' devices by supplying sequential device
  IDs
summary: >-
  FastBee through 2.1.0 contains an insecure direct object reference
  vulnerability in DeviceController that allows authenticated low-privilege
  users to read and modify other tenants' devices by supplying sequential device
  IDs. Self-registe…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-639
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T17:17:37.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110124'
references:
  - url: >-
      https://github.com/kerwincui/FastBee/blob/v1.2.1/springboot/wumei-iot/src/main/java/com/ruoyi/iot/controller/DeviceController.java#L118-L213
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-open-api/src/main/java/com/fastbee/data/controller/DeviceController.java#L119-L211
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-service/fastbee-iot-service/src/main/java/com/fastbee/iot/service/impl/DeviceServiceImpl.java#L105-L125
    label: disclosure@vulncheck.com
  - url: 'https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/fastbee-device-ownership-idor'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/fastbee-through-2.1.0-idor-via-devicecontroller-iot-device-endpoints
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-13T17:38:53.191Z'
---

## Overview

FastBee through 2.1.0 contains an insecure direct object reference vulnerability in DeviceController that allows authenticated low-privilege users to read and modify other tenants' devices by supplying sequential device IDs. Self-registered attackers can enumerate deviceId or serialNumber values to read owner, IP, and location data, and overwrite user_id and tenant_id to take over devices.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.