SB2026031068 - Multiple vulnerabilities in Microsoft Windows Accessibility Infrastructure (ATBroker.exe)

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2026-25186)

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

The vulnerability exists due to excessive data output by the application in Windows Accessibility Infrastructure (ATBroker.exe). A local user can gain unauthorized access to sensitive information on the system.

2) Incorrect permission assignment for critical resource (CVE-ID: CVE-2026-24291)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect permission assignment for critical resource in Windows Accessibility Infrastructure (ATBroker.exe). A local user can gain elevated privileges on the target system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25186
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24291