Azure IoT Explorer Information Disclosure Vulnerability

published 2026-02-10 8 mo ago modified 2026-08-19 2 mo ago also EUVD-2026-7339

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.5%; EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits: 0; none known

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

Patch / fix

fixed in 1 links 1

Microsoft Azure IoT Explorer 0.15.13

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21528 advisory

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 8 mo ago (2026-02-11)

Exploit prediction

0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C
CNA	3.1	6.5	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

Classification

Weakness

CWE-1327 Binding to an Unrestricted IP Address
CWE-668 Exposure of Resource to Wrong Sphere

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2026-21528
vendor-advisory, patch

Sources

CVE List CVE-2026-21528
NVD CVE-2026-21528

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary