Elevation of Privilege Vulnerability in Windows Win32 Kernel Subsystem
CVE-2025-24983

7HIGH

Key Information:

Vendor: Microsoft
Status: Windows 10 Version 1507; Windows 10 Version 1607; Windows Server 2016; Windows Server 2016 (server Core Installation)
Vendor: CVE Published:; 11 March 2025

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What is CVE-2025-24983?

CVE-2025-24983 is an elevation of privilege vulnerability affecting the Windows Win32 Kernel Subsystem, a critical component of the Microsoft Windows operating system responsible for managing core functionalities. This vulnerability arises from a "use after free" flaw, which may permit a local authorized attacker to escalate their privileges on the affected system. If exploited, this could allow adversaries to gain elevated permissions, compromising the integrity and security of the operating environment, and potentially allowing them to execute unauthorized actions within the system.

Technical Details

The vulnerability manifests due to improper management of memory resources within the Windows Win32 Kernel Subsystem. Specifically, it involves a scenario where the system fails to adequately safeguard memory that has been freed, leading to potential exploitation pathways. Attackers with local access and certain permissions could leverage this flaw to perform operations with higher privileges than initially granted, raising significant security concerns.

Potential Impact of CVE-2025-24983

Unauthorized Access: Exploiting this vulnerability could allow attackers to gain unauthorized access to sensitive system functions, leading to unauthorized alterations and exposure of confidential data.
System Compromise: The ability to elevate privileges can result in a complete system compromise, enabling attackers to install malicious software, exfiltrate data, or further penetrate the network.
Widespread Security Breaches: Since the vulnerability exists in a critical component of the Windows operating system, successful exploitation could have cascading effects across various applications and services running on the affected system, potentially leading to widespread organizational security breaches.

CISA Reported

CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace

The CISA's recommendation is: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.