CVE-2025-47993 is a vulnerability identified in Microsoft Windows 11 Version 24H2, specifically affecting the Microsoft PC Manager component. The root cause is improper access control (CWE-284), which allows an attacker with existing local authorization to escalate their privileges beyond their assigned level. The vulnerability does not require user interaction, making it easier to exploit once local access is obtained. The CVSS 3.1 base score is 7.8, reflecting a high severity due to the potential for full system compromise, impacting confidentiality, integrity, and availability of affected systems. The attack vector is local (AV:L), with low attack complexity (AC:L) and requires privileges (PR:L), but no user interaction (UI:N). The scope remains unchanged (S:U), meaning the impact is confined to the vulnerable component or system. Although no public exploits have been reported yet, the vulnerability’s nature suggests that attackers who gain local access could leverage it to gain administrative control, enabling further malicious activities such as installing persistent malware, disabling security controls, or accessing sensitive data. The vulnerability was reserved in May 2025 and published in July 2025, with no patches currently linked, indicating organizations should monitor for updates from Microsoft. The vulnerability affects Windows 11 build 10.0.26100.0, which corresponds to the 24H2 update, a widely deployed version in enterprise and consumer environments.

The impact of CVE-2025-47993 is significant for organizations worldwide using Windows 11 Version 24H2. Successful exploitation allows an attacker with local access to escalate privileges to administrative levels, potentially leading to full system compromise. This can result in unauthorized access to sensitive information, disruption of system availability, and the ability to bypass security controls. For enterprises, this could mean lateral movement within networks, data exfiltration, deployment of ransomware, or persistent backdoors. The requirement for local access limits remote exploitation but does not eliminate risk, especially in environments with many users or where endpoint security is weak. The lack of user interaction requirement increases the risk of automated or stealthy exploitation once local access is gained. Critical infrastructure, government agencies, and organizations with high-value data are particularly vulnerable due to the potential for severe operational and reputational damage.

To mitigate CVE-2025-47993, organizations should implement the following specific measures: 1) Restrict local access to systems running Windows 11 Version 24H2 by enforcing strict user account controls and limiting administrative privileges to only those who absolutely require them. 2) Employ application whitelisting and endpoint detection and response (EDR) solutions to monitor and block suspicious privilege escalation attempts. 3) Use Windows security features such as Credential Guard and User Account Control (UAC) to add layers of defense against unauthorized privilege elevation. 4) Regularly audit and review local user accounts and permissions to detect and remove unnecessary privileges. 5) Monitor system logs for unusual activities indicative of privilege escalation attempts. 6) Stay informed about Microsoft’s security updates and apply patches promptly once available. 7) Consider network segmentation to limit the impact of compromised endpoints. 8) Educate users about the risks of local access and enforce policies to prevent unauthorized physical or remote local access to endpoints.