CVE-2026-23661: Azure IoT Explorer Information Disclosure Vulnerability

Overview

Severity
High (CVSS 7.5)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Category
Information Disclosure
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2026-Mar
Released
2026-03-10
EPSS Score
0.04% (percentile: 13.2%)

Description

Cleartext transmission of sensitive information in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.

FAQ

What type of information could be disclosed by this vulnerability? This vulnerability could allow an attacker on the same network to view sensitive data sent through the application’s unencrypted HTTP connection. Depending on how the application is used, this may include device connection information, authentication tokens, request data, file paths, and other information transmitted between the application and the IoT Hub. An attacker who intercepts this data may also be able to obtain device connection strings that could allow them to impersonate a device in the customer’s IoT environment.

Affected Products (1)

Azure

  • Azure IoT Explorer

Security Updates (2)

Acknowledgments

<a href="https://www.linkedin.com/in/hay-mizrachi/">Hay Mizrachi</a> with <a href="https://microsoft.com/">Microsoft</a>

Revision History

  • 2026-03-10: Information published.