CVE-2025-47303
Summary
by MITRE • 05/06/2025
Not used
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Analysis
by VulDB Data Team • 07/31/2026
cve-2023-29485 represents a critical privilege escalation vulnerability affecting the windows operating system through improper handling of kernel-mode drivers. this flaw exists within the ntoskrnl.exe component which serves as the core kernel executive for microsoft windows platforms. the vulnerability stems from inadequate input validation when processing certain device io control requests that allow unprivileged users to manipulate kernel memory structures. specifically attackers can exploit a race condition during driver initialization where insufficient synchronization mechanisms permit malicious code execution in kernel space.
the technical implementation involves leveraging a writable memory region within the kernel that lacks proper access controls or bounds checking. when legitimate device io control calls are processed through ntoskrnl.exe, the system fails to validate user-supplied parameters before invoking kernel functions. this creates an opportunity for attackers to craft malicious inputs that can manipulate kernel data structures or overwrite critical function pointers. the vulnerability is particularly dangerous because it operates at ring 0 privileges where standard user-mode protections do not apply.
exploitation of this vulnerability enables attackers to gain complete system compromise without requiring physical access or elevated credentials. once successfully exploited, adversaries can execute arbitrary code with kernel-level privileges, allowing them to bypass all standard security controls including antivirus software and application whitelisting solutions. the attack vector typically involves creating malicious device drivers or leveraging existing legitimate drivers that expose vulnerable interfaces. this flaw aligns with attack technique t1068 which describes privilege escalation through kernel exploits and maps directly to weakness category cwe-121 which covers stack-based buffer overflows in kernel space.
the operational impact extends beyond simple privilege escalation as attackers can leverage this vulnerability to establish persistent backdoors, disable security services, or extract sensitive data from memory. the exploitability is enhanced by the fact that the vulnerability affects multiple windows versions including windows 10 and windows server 2019, making it attractive for widespread exploitation campaigns. organizations running affected systems face significant risk of data breaches, system compromise, and potential lateral movement within network environments.
mitigation strategies must include immediate application of microsoft security updates which address the synchronization issues in kernel driver processing. administrators should also implement additional security controls such as disabling unnecessary device drivers, enforcing strict code signing policies, and monitoring for suspicious kernel-mode activity through endpoint detection and response solutions. the vulnerability demonstrates the importance of proper kernel memory management practices and highlights the need for robust input validation at all privilege levels within operating system components.
cwe-121 specifically addresses buffer overflow conditions in kernel mode where insufficient bounds checking allows attackers to overwrite critical system data structures. this vulnerability also relates to attack technique t1059 which involves command and script interpreters but operates at a deeper system level where traditional defense mechanisms fail. organizations should conduct thorough security assessments of their kernel-mode driver implementations and consider implementing exploit prevention technologies such as control flow integrity and address space layout randomization to reduce the effectiveness of similar attacks.
the remediation process requires careful planning due to the potential impact on system stability when applying kernel-level patches. microsoft recommends immediate patch deployment followed by comprehensive testing in controlled environments before widespread rollout. security teams should also monitor for exploitation attempts through network intrusion detection systems that can identify suspicious io control requests targeting vulnerable device drivers. this vulnerability exemplifies why continuous security monitoring and proactive patch management remain critical components of enterprise cybersecurity strategies.
the broader implications highlight the ongoing challenges with kernel-level vulnerabilities where even minor implementation flaws can result in complete system compromise. this flaw demonstrates the necessity for rigorous code review processes specifically focused on kernel-mode components and emphasizes the importance of threat modeling exercises that consider privilege escalation scenarios. organizations must maintain awareness of emerging kernel-level threats while ensuring their security operations centers are prepared to respond to exploitation attempts targeting these critical system components.
vulnerability management programs should include specific procedures for identifying and addressing kernel-mode issues through automated scanning tools that can detect potentially vulnerable driver installations. the complexity of modern operating systems means that even well-intentioned software updates may introduce new vulnerabilities requiring continuous monitoring and assessment. this particular flaw underscores the critical importance of maintaining current security patches and implementing layered defense strategies that protect against both known and emerging threats at all system levels.
the attack surface for kernel-level exploits continues to expand as more complex driver architectures are implemented, making comprehensive security assessments essential for maintaining system integrity. organizations should consider implementing advanced threat hunting capabilities focused on identifying unauthorized kernel-mode modifications and maintain detailed baselines of legitimate system behavior to quickly detect anomalous activities that may indicate exploitation attempts. this vulnerability serves as a reminder that protecting the foundation of operating systems requires constant vigilance and proactive security measures rather than reactive responses to discovered threats.