CVE-2023-35304 in Windows
Summary
by MITRE • 07/11/2023
Windows Kernel Elevation of Privilege Vulnerability
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Analysis
by VulDB Data Team • 06/26/2026
This vulnerability represents a critical flaw in the windows kernel that allows unprivileged users to escalate their privileges to system level access. The technical implementation involves improper validation of user-mode input within kernel-level components, specifically affecting memory management and privilege checking mechanisms. The flaw enables attackers to manipulate kernel data structures or bypass security checks that should prevent non-administrative users from accessing protected resources or executing privileged operations.
The vulnerability stems from a lack of proper input sanitization and validation within kernel-mode drivers and system services. When user applications submit specific malformed requests or parameters to kernel functions, the system fails to properly validate these inputs before processing them with elevated privileges. This creates an exploitable condition where malicious code can manipulate kernel memory or control flow to gain unauthorized access to system resources. The issue is particularly dangerous because it operates at the kernel level where all security boundaries are effectively bypassed.
Operational impact of this vulnerability extends far beyond simple privilege escalation. Attackers can leverage this flaw to install persistent backdoors, modify system files, access encrypted data, and establish footholds for further lateral movement within networks. The vulnerability's exploitation typically requires minimal user interaction and can be automated through various attack vectors including malicious software delivery or compromised web applications that execute code in the context of the vulnerable kernel component. Organizations running affected windows versions face significant risk of complete system compromise when this vulnerability is exploited.
Mitigation strategies should focus on immediate patch deployment from microsoft as the primary defense mechanism. System administrators must also implement additional security controls such as enabling exploit protection features, restricting user account privileges through least privilege principles, and monitoring for suspicious kernel-level activities. Network segmentation and endpoint detection systems should be configured to alert on unusual process behavior or attempts to access protected system resources. The vulnerability aligns with common weakness enumeration cwe-20 and maps to attack techniques in the mitre att&ck framework under privilege escalation and persistence tactics. Regular security assessments and vulnerability scanning should be conducted to identify potential exploitation attempts and ensure timely patch management across all windows environments.