CVE-2026-27930: Information Disclosure in Windows GDI

The core impact of CVE-2026-27930 lies in the potential for local information disclosure. An attacker who can exploit this vulnerability could read data from memory regions they are not authorized to access. This data could include sensitive system information, user credentials, or other confidential data. While the vulnerability is described as local, it could be leveraged in scenarios where an attacker has already gained some level of access to the system, such as through a phishing attack or compromised account. The extent of the data exposed depends on the specific memory region accessed, but the potential for misuse is significant. Exploitation could lead to privilege escalation or further compromise of the system, depending on the nature of the disclosed information.

1. 公開日2026-04-14
2. 更新日2026-05-12
3. EPSS 更新日2026-04-22

The primary mitigation for CVE-2026-27930 is to upgrade affected Windows systems to version 10.0.28000.1836 or later. If immediate patching is not feasible, consider implementing stricter access controls and monitoring system activity for suspicious behavior. While a direct workaround is not available, limiting user privileges and restricting access to sensitive resources can reduce the potential impact of a successful exploitation. Regularly review and update security policies to ensure they align with current threat landscape. After upgrading, confirm the fix by checking the Windows version number to ensure it is 10.0.28000.1836 or higher.