CVE-2025-53724 in Windows
Summary
by MITRE • 08/12/2025
Access of resource using incompatible type ('type confusion') in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 11/22/2025
The vulnerability identified as CVE-2025-53724 represents a critical type confusion flaw within the Windows Push Notifications component that enables local privilege escalation for authenticated attackers. This issue stems from improper type handling during resource access operations, creating a scenario where the system incorrectly interprets data types during processing. The vulnerability specifically affects the Windows Push Notifications service which handles messaging and notification delivery across the operating system. Type confusion vulnerabilities occur when a program uses a variable or object with one data type while expecting another, leading to unpredictable behavior and potential exploitation. The flaw exists in the kernel-mode components of the push notification subsystem where memory management and object handling routines fail to properly validate data types before processing. Attackers can leverage this weakness by crafting malicious payloads that manipulate the type system, potentially causing the system to execute arbitrary code with elevated privileges. The vulnerability is particularly dangerous because it requires only local authentication to exploit, making it accessible to any user with valid login credentials on the target system.
The technical implementation of this type confusion vulnerability manifests in the Windows kernel's handling of notification objects and their associated metadata. When the push notification service processes incoming messages or notification requests, it performs operations that assume specific data types for various parameters and structures. However, due to insufficient type validation checks, an attacker can manipulate the input data to cause the system to interpret memory locations as different data types than intended. This misinterpretation can lead to memory corruption, code execution, or privilege escalation. The vulnerability typically occurs during object initialization, method calls, or memory allocation routines where type information is not properly verified before usage. According to CWE-415, this represents an improper type handling scenario that can result in memory corruption and unauthorized privilege escalation. The attack vector requires local system access and leverages the fact that the Windows Push Notifications service runs with elevated privileges, making it an attractive target for privilege escalation attacks. The exploitation process involves carefully crafting notification requests that trigger the type confusion condition, potentially allowing attackers to execute malicious code with SYSTEM-level privileges.
The operational impact of CVE-2025-53724 extends beyond simple privilege escalation as it provides attackers with a persistent foothold on compromised systems. Once an attacker successfully exploits this vulnerability, they gain the ability to execute arbitrary code with the highest system privileges, enabling them to install malware, modify system files, establish backdoors, or access sensitive data. The local privilege escalation capability means that attackers do not need to rely on network-based attacks or social engineering to gain elevated access. This vulnerability directly impacts the Windows operating system's security model by undermining the principle of least privilege and potentially allowing attackers to bypass other security controls. The attack surface includes all Windows versions that support push notifications, particularly those running Windows 10 and Windows 11 with the push notification service enabled. The vulnerability can be particularly devastating in enterprise environments where attackers might use it to gain access to critical infrastructure or sensitive corporate data. According to ATT&CK technique T1068, this vulnerability enables privilege escalation, while T1059 covers the potential for command execution that follows successful exploitation. The impact is amplified by the fact that push notifications are frequently used for legitimate system management and user interaction, making malicious exploitation less likely to be detected by security monitoring systems.
Mitigation strategies for CVE-2025-53724 should focus on both immediate patching and operational security improvements. Microsoft has released security updates addressing this vulnerability, and organizations should prioritize applying these patches across all affected systems. In the interim, system administrators can implement additional security controls such as restricting local user access, monitoring for unusual notification service activity, and implementing strict access controls for notification-related services. The principle of least privilege should be enforced by ensuring that only necessary users have local access to systems running the affected service. Network segmentation and monitoring solutions should be configured to detect anomalous behavior in notification processing, particularly around memory allocation and object handling operations. Organizations should also consider implementing application whitelisting policies that restrict execution of unauthorized binaries in system directories. The vulnerability highlights the importance of secure coding practices and proper input validation in kernel-mode components. Security teams should conduct regular vulnerability assessments focusing on type handling and memory management routines, particularly in system services that operate with elevated privileges. Additionally, endpoint detection and response solutions should be configured to monitor for indicators of compromise related to privilege escalation attempts and suspicious notification service behavior. Regular security awareness training for administrators should emphasize the importance of timely patch management and the potential risks associated with local privilege escalation vulnerabilities in system services.