IoTSharp through 3.6.1 contains an insecure direct object reference vulnerability that allows any authenticated user to read other tenants' data because Customers and Devices API handlers do not scope queries to the caller's tenant. Attackers can self-register through the anonymous AccountController.Create endpoint and supply other tenants' GUIDs to read customer contact details, device inventories and device attribute telemetry.
History

Fri, 23 Oct 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Iotsharp
Iotsharp iotsharp
Vendors & Products Iotsharp
Iotsharp iotsharp

Wed, 21 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 16 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
Description IoTSharp through 3.6.1 contains an insecure direct object reference vulnerability that allows any authenticated user to read other tenants' data because Customers and Devices API handlers do not scope queries to the caller's tenant. Attackers can self-register through the anonymous AccountController.Create endpoint and supply other tenants' GUIDs to read customer contact details, device inventories and device attribute telemetry.
Title IoTSharp through 3.6.1 Cross-Tenant Data Exposure via Customers and Devices APIs
Weaknesses CWE-639
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-16T17:39:03.518Z

Updated: 2026-10-21T20:43:22.568Z

Reserved: 2026-10-16T14:31:11.958Z

Link: CVE-2026-111629

cve-icon Vulnrichment

Updated: 2026-10-21T20:43:15.579Z

cve-icon NVD

Status : Deferred

Published: 2026-10-16T18:17:43.043

Modified: 2026-10-21T21:17:53.290

Link: CVE-2026-111629

cve-icon Redhat

No data.