CVE-2019-0710 in Windows
Summary
by MITRE
A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system, aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0711, CVE-2019-0713.
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Analysis
by VulDB Data Team • 05/20/2025
The vulnerability described in CVE-2019-0710 represents a critical denial of service flaw within Microsoft Hyper-V virtualization platform that specifically targets the host server's input validation mechanisms. This issue arises from insufficient validation of input data originating from privileged users within guest operating systems, creating a pathway for malicious actors to potentially disrupt the normal operation of virtualized environments. The vulnerability is particularly concerning because it leverages the trust relationship between host and guest systems, where legitimate privileged access can be exploited to cause system-wide disruption.
The technical flaw manifests in how Hyper-V processes and validates input parameters from guest operating systems, particularly when these inputs originate from users with elevated privileges. This validation failure creates an opportunity for attackers to craft malicious input sequences that can trigger unexpected behavior in the host system's virtualization layer. The vulnerability specifically affects the Windows Hyper-V environment and demonstrates a weakness in the input sanitization processes that should normally prevent privilege escalation or system disruption through guest-to-host communication channels. This type of flaw typically falls under CWE-20, which represents "Improper Input Validation," and represents a classic example of how insufficient validation can lead to system instability.
The operational impact of this vulnerability extends beyond simple service interruption, as it can potentially allow attackers to cause complete system crashes or resource exhaustion within the Hyper-V host environment. When exploited successfully, the vulnerability can result in the termination of virtual machine processes, disruption of network services, and overall degradation of the virtualization infrastructure. This makes it particularly dangerous in enterprise environments where Hyper-V hosts typically manage multiple critical virtual machines and where service availability is paramount. The vulnerability's impact is amplified by its ability to be triggered through legitimate privileged access, making detection and prevention more challenging.
Mitigation strategies for CVE-2019-0710 should focus on implementing comprehensive input validation mechanisms within the Hyper-V environment, along with regular security updates and patches from Microsoft. Organizations should also consider network segmentation and access controls to limit the potential impact of compromised guest systems. The vulnerability highlights the importance of maintaining strict input validation practices in virtualization platforms, as demonstrated by the ATT&CK framework's emphasis on privilege escalation and defense evasion techniques. Additionally, implementing monitoring solutions that can detect anomalous input patterns from guest systems provides an additional layer of protection against exploitation attempts. Security teams should prioritize patch management processes to ensure timely deployment of Microsoft security updates addressing this specific vulnerability.