SB2026031062 - Multiple vulnerabilities in Microsoft Azure IoT Explorer

Description

This security bulletin contains information about 3 vulnerabilities.

1) Cleartext transmission of sensitive information (CVE-ID: CVE-2026-23662)

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information in Azure IoT Explorer. A remote attacker can gain access to sensitive data.

2) Improper restriction of communication channel to intended endpoints (CVE-ID: CVE-2026-23664)

CWE-ID: CWE-923 - Improper Restriction of Communication Channel to Intended Endpoints

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper restriction of communication channel to intended endpoints in Azure IoT Explorer. A remote attacker can gain access to sensitive information on the system.

3) Cleartext transmission of sensitive information (CVE-ID: CVE-2026-23661)

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to software uses insecure communication channel to transmit sensitive information in Azure IoT Explorer. A remote attacker can gain access to sensitive data.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23662
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23664
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23661