What is CVE-2026-26121?

CVE-2026-26121 is a high-severity vulnerability in Microsoft Azure Iot Explorer, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-03-10.

How severe is CVE-2026-26121?

High severity. CVSS v3 base score is 7.5 out of 10.

SSRF in Microsoft Azure Iot Explorer

CVE-2026-26121

Server-side request forgery (ssrf) in Azure IoT Explorer allows an unauthorized attacker to perform spoofing over a network.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.002 (43.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). 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.

Affected products

Microsoft Azure Iot Explorer — versions 1.0.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)
CWE-20 — Improper Input Validation

References

Azure IOT Explorer Spoofing Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-26121?: CVE-2026-26121 is a high-severity vulnerability in Microsoft Azure Iot Explorer, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.5/10. Published 2026-03-10.
How severe is CVE-2026-26121?: High severity. CVSS v3 base score is 7.5 out of 10.