CVE-2025-53725 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-2025-53725 represents a critical type confusion flaw within the Windows Push Notifications component that enables local privilege escalation for authenticated attackers. This issue manifests when the system processes push notification resources using incompatible data types, creating a scenario where memory operations can be manipulated to execute arbitrary code with elevated privileges. The vulnerability exists in the Windows operating system's notification handling mechanisms, specifically within the push notification service that manages communication between applications and the system's notification infrastructure. Type confusion vulnerabilities occur when a program uses a variable or object with one data type in a context that expects another type, leading to unpredictable behavior and potential exploitation opportunities.
The technical implementation of this vulnerability stems from improper type validation within the Windows Push Notifications subsystem where resource handling routines fail to properly verify data types before processing. When an authenticated user submits malicious push notification requests or manipulates existing notification resources, the system's type checking mechanisms can be bypassed or confused, allowing attackers to craft inputs that trigger memory corruption. This flaw operates at the kernel level within Windows components, making it particularly dangerous as it can be exploited by users with standard account privileges to gain SYSTEM-level access. The vulnerability aligns with CWE-415 which describes double free errors, and CWE-416 which covers use after free conditions, though it specifically manifests as a type confusion rather than direct memory management issues. The attack vector leverages legitimate system interfaces while exploiting the underlying type handling mechanisms.
The operational impact of CVE-2025-53725 extends beyond simple privilege escalation as it provides attackers with a persistent foothold on compromised systems. Once elevated to SYSTEM privileges, attackers can modify critical system files, install backdoors, disable security controls, and establish persistence mechanisms that are difficult to detect or remove. The vulnerability affects all versions of Windows that support push notifications, including desktop and server variants, making it particularly concerning for enterprise environments where multiple systems may be exposed. Organizations running Windows systems without proper patching measures face significant risk, as this vulnerability can be exploited through legitimate user accounts without requiring additional attack vectors. The exploitation process typically involves crafting malicious notification payloads that trigger the type confusion, followed by privilege escalation techniques that leverage the corrupted memory state to execute code with kernel-level privileges. This vulnerability directly maps to attack techniques described in the MITRE ATT&CK framework under privilege escalation tactics, specifically targeting the use of system services and kernel exploits.
Mitigation strategies for CVE-2025-53725 require immediate patch deployment from Microsoft as the primary defense mechanism, though organizations should also implement additional protective measures during the patching process. Network segmentation and access controls should be enforced to limit user privileges and reduce the attack surface, while monitoring solutions should be configured to detect unusual notification processing patterns or privilege escalation attempts. System administrators should implement least privilege principles and regularly audit user accounts for unauthorized access to notification services. The vulnerability's nature makes it particularly susceptible to exploitation through automated tools, so organizations should also consider implementing application control policies that restrict notification-related processes and monitor for suspicious resource handling patterns. Additionally, regular security assessments and penetration testing should be conducted to identify potential exploitation pathways and verify the effectiveness of implemented controls. The Windows Defender Application Control and similar technologies can help prevent exploitation by restricting execution of unauthorized code during the privilege escalation process.