What is CVE-2026-21528?

CVE-2026-21528 is a medium-severity vulnerability in Microsoft Azure Iot Explorer, classified under CWE-1327. CVSS score: 6.5/10. Published 2026-02-10.

How severe is CVE-2026-21528?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Microsoft Azure Iot Explorer

CVE-2026-21528

Binding to an unrestricted ip address in Azure IoT Explorer allows an unauthorized attacker to disclose information over a network.

EPSS: 0.005 (40.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Microsoft Azure Iot Explorer — versions 1.0.0
Microsoft Azure_iot_explorer

Weakness classification (CWE)

CWE-1327
CWE-668 — Exposure of Resource to Wrong Sphere

References

secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-21528?: CVE-2026-21528 is a medium-severity vulnerability in Microsoft Azure Iot Explorer, classified under CWE-1327. CVSS score: 6.5/10. Published 2026-02-10.
How severe is CVE-2026-21528?: Medium severity. CVSS v3 base score is 6.5 out of 10.