SB2025081334 - Multiple vulnerabilities in Microsoft Azure Stack Hub

Description

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2025-53765)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to exposure of private personal information to an unauthorized actor in Azure Stack. A local administrator can gain unauthorized access to sensitive information on the system.

2) Improper Authentication (CVE-ID: CVE-2025-53793)

CWE-ID: CWE-287 - Improper Authentication

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 bypass authentication process.

The vulnerability exists due to an error when processing authentication requests in Azure Stack Hub. A remote attacker can bypass authentication process and gain unauthorized access to sensitive information.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53765
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53793