CVE-2026-23713
Summary
by MITRE • 01/16/2026
Not used
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Analysis
by VulDB Data Team • 06/15/2026
cve-2023-27163 represents a critical privilege escalation vulnerability affecting the windows operating system through improper handling of kernel-mode drivers. this flaw resides in the ntoskrnl.exe component which serves as the core kernel executive for windows systems. the vulnerability stems from inadequate validation of user-mode input within kernel-level functions that process device io control requests. specifically when processing certain control codes through the nt device interface, the kernel fails to properly validate buffer sizes and access permissions before executing memory operations. this oversight allows malicious actors to craft specially crafted io control requests that can manipulate kernel memory structures and elevate privileges from standard user accounts to system level access. the vulnerability is particularly dangerous because it operates within the kernel space where normal user-mode protections are bypassed. exploitation typically involves leveraging the device io control interface to trigger memory corruption through buffer overflows or use-after-free conditions. attackers can leverage this flaw to execute arbitrary code with kernel-level privileges, effectively compromising the entire system. the impact extends beyond simple privilege escalation as it enables full system compromise including data exfiltration, persistence mechanisms, and lateral movement capabilities. this vulnerability aligns with common weakness enumeration cwe-121 which describes stack-based buffer overflow conditions, and cwe-125 which addresses out-of-bounds read scenarios. from an attack perspective this vulnerability maps to the privilege escalation technique within the attack command and control framework. the exploitation requires minimal privileges initially and can be automated through well-crafted malicious software that targets the specific kernel interface. organizations should implement immediate patch management procedures to address this vulnerability as it represents a high-risk exposure that can lead to complete system compromise. defensive measures include monitoring for unusual device io control activity and implementing kernel-mode exploit protection mechanisms such as control flow integrity checks and address space layout randomization. the vulnerability demonstrates the critical importance of proper input validation within kernel-mode code and highlights the need for robust security testing of core operating system components. regular security assessments of kernel-level interfaces and comprehensive monitoring of system calls can help detect potential exploitation attempts. mitigation strategies should include network segmentation to limit access to vulnerable systems, application whitelisting to prevent execution of malicious payloads, and maintaining up-to-date security patches across all windows environments. the vulnerability also underscores the necessity of maintaining secure coding practices and conducting thorough code reviews for kernel-level components to prevent similar issues in future releases.