CVE-2018-8405 is a high-severity elevation of privilege vulnerability that exists when the DirectX Graphics Kernel (DXGKRNL) driver improperly handles objects in memory. This flaw affects multiple versions of Windows, including Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, and Windows 10 Servers. The CVSS score for this vulnerability is 7.8, which highlights its critical nature and the potential risks it presents.
The urgency for organizations to address this vulnerability is underscored by its classification as a known exploited vulnerability, added to the KEV catalog on March 28, 2022. This indicates that attackers are actively leveraging this flaw, making it crucial for organizations to prioritize patching to prevent unauthorized access and potential system compromises.
Risk to organizations includes potential unauthorized access and control over affected systems. Given the significant impacts on confidentiality, integrity, and availability, organizations must act swiftly to mitigate this risk.
In summary, organizations using the affected versions of Windows should prioritize patching immediately to protect their systems against exploitation.
Vulnerability Details
The vulnerability allows an attacker to gain elevated privileges within the affected systems. Specifically, the improper handling of memory objects by the DirectX Graphics Kernel can lead to unauthorized access to sensitive system resources.
CWE-404 is the underlying weakness associated with this vulnerability, categorizing it as a case of resource management errors. The vulnerability was published on August 15, 2018, and remains critical as of its last modification in October 2025.
Technical Analysis
The root cause of CVE-2018-8405 is the improper handling of objects in memory by the DXGKRNL driver. This vulnerability has a low attack complexity and requires low privileges for exploitation, meaning that it could be leveraged by low-privileged users to escalate their privileges.
No user interaction is required for exploitation, and the attack vector is local, meaning an attacker must have access to the local machine to exploit the vulnerability. The impacts on confidentiality, integrity, and availability are high, indicating that successful exploitation could lead to significant damage.
Risk & Impact Analysis
The real-world risk associated with CVE-2018-8405 is substantial. Organizations running affected versions of Windows should assess their deployment environments for potential exposure. The blast radius of this vulnerability is significant, as it may allow an attacker to gain control over critical system functions.
The urgency of addressing this vulnerability is critical, given its high CVSS score and active exploitation status. Organizations must prioritize remediation efforts to reduce the likelihood of successful attacks on their systems.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | Yes |
Affected Versions
The affected versions of Microsoft Windows include: Windows 10 (all versions from 1507 to 1803), Windows 8.1, Windows RT 8.1, Windows Server 2012 R2, Windows Server 2016, Windows Server 1709, and Windows Server 1803. Organizations should confirm their current version and apply the necessary patches.
Mitigation & Remediation
Organizations should apply updates per vendor instructions to remediate this vulnerability. For detailed guidance, refer to the Microsoft Security Response Center's advisory on CVE-2018-8405.
Penetration testing can also help identify similar vulnerabilities in your environment.
Detection Guidance
Organizations should monitor for unusual application behaviors and log indicators that may suggest exploitation attempts. Specific attention should be paid to logs from the DirectX Graphics Kernel and related system components.
AppSecure Threat Intelligence Insight
CVE-2018-8405 represents a significant risk within the Microsoft ecosystem, particularly due to its elevation of privilege capabilities. The ongoing monitoring and response to such vulnerabilities are critical in maintaining secure operational environments.
As organizations enhance their security posture, they should consider adopting comprehensive security testing methodologies. This includes regular assessments and updates to ensure defenses are robust against known vulnerabilities.
Security testing best practices can provide guidance on how to structure these efforts effectively.
A vulnerability management program tailored to your organization's needs will further enhance your defenses against evolving threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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