CVE-2025-59290 in Windows
Summary
by MITRE • 10/14/2025
Use after free in Windows Bluetooth Service allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 10/23/2025
The vulnerability identified as CVE-2025-59290 represents a critical use-after-free flaw within the Windows Bluetooth service component that enables local privilege escalation for authenticated attackers. This vulnerability resides in the kernel-mode driver responsible for managing Bluetooth communication protocols and device interactions within the Windows operating system. The flaw manifests when the Bluetooth service processes certain malformed or crafted input data structures, leading to improper memory management practices that can be exploited to execute arbitrary code with elevated privileges.
The technical implementation of this vulnerability stems from inadequate bounds checking and memory deallocation procedures within the Bluetooth service kernel driver. When legitimate Bluetooth operations are performed with maliciously constructed parameters, the driver fails to properly validate input data before freeing memory resources. This creates a window where freed memory can be accessed and manipulated by an attacker who has already established a low-privilege user session. The flaw specifically relates to CWE-416 which categorizes use-after-free vulnerabilities as a critical class of memory safety issues that can lead to arbitrary code execution and privilege escalation.
From an operational perspective, this vulnerability presents a significant risk to Windows environments where local user accounts exist, particularly in enterprise settings where users may have legitimate access to systems but should not possess administrative privileges. The attack requires an authenticated user context, meaning that an attacker must first establish a foothold on the target system through other means such as phishing, credential theft, or social engineering. Once inside, the attacker can leverage this vulnerability to escalate privileges from standard user to SYSTEM level access, effectively gaining complete control over the affected system. The implications extend beyond individual system compromise as this vulnerability can be used as a stepping stone for lateral movement and broader network infiltration.
The exploitation of CVE-2025-59290 aligns with several tactics outlined in the MITRE ATT&CK framework, particularly those related to privilege escalation and defense evasion. The vulnerability enables techniques such as 'Process Injection' and 'Exploitation for Privilege Escalation' by allowing an attacker to execute code in the context of a higher-privilege process. Additionally, the use-after-free nature of the vulnerability can be leveraged to bypass certain security controls, making it particularly dangerous in environments with active threat monitoring. Organizations should consider this vulnerability as part of a broader attack chain where initial access is followed by privilege escalation to achieve persistent administrative control.
Mitigation strategies for this vulnerability should prioritize immediate patch deployment from Microsoft, as the fix typically involves memory management improvements and input validation enhancements within the Bluetooth service driver. System administrators should implement least privilege principles and restrict user access to Bluetooth services where possible. Network segmentation and monitoring solutions should be enhanced to detect anomalous Bluetooth service behavior or unexpected privilege escalation attempts. The vulnerability also highlights the importance of regular security assessments and penetration testing focused on kernel-mode components, as these areas often represent the most critical attack surfaces in operating systems. Organizations should also consider implementing behavioral analytics to detect potential exploitation attempts and maintain comprehensive incident response procedures that account for local privilege escalation vulnerabilities.