Auth bypass in Kerwincui Fastbee
CVE-2026-110124
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/fastbee-device-ownership-idor (third-party-advisory)
- github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-service/fastbee-iot… (technical-description)
- github.com/kerwincui/FastBee/blob/v2.1.0/springboot/fastbee-open-api/src/main/j… (technical-description)
- github.com/kerwincui/FastBee/blob/v1.2.1/springboot/wumei-iot/src/main/java/com… (technical-description)
- www.vulncheck.com/advisories/fastbee-through-2.1.0-idor-via-devicecontroller-io… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110124?
- CVE-2026-110124 is a high-severity vulnerability in Kerwincui Fastbee, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.1/10. Published 2026-10-13.
- How severe is CVE-2026-110124?
- High severity. CVSS v3 base score is 8.1 out of 10.