Overview
CVE-2025-54092 is a severe vulnerability found in Windows Hyper-V that could allow an authorized attacker to elevate their privileges due to a race condition. This is particularly worrying as it could potentially lead to system compromise or data leakage, posing a significant risk to all users of the affected Windows Hyper-V versions.
Vulnerability Summary
CVE ID: CVE-2025-54092
Severity: High, CVSS score 7.8
Attack Vector: Local
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Windows Hyper-V | All versions prior to patch
How the Exploit Works
The exploit works by leveraging a race condition in Windows Hyper-V, where concurrent execution using a shared resource lacks proper synchronization. An authorized attacker can exploit this flaw to execute their code with elevated privileges on the host system, potentially leading to a full system compromise.
Conceptual Example Code
To illustrate, consider the following pseudocode:
//Thread 1
while(!done) {
shared_resource.access();
}
//Thread 2
while(!done) {
shared_resource.modify();
}In this example, Thread 1 is continuously accessing a shared resource, while Thread 2 is attempting to modify it at the same time. If an attacker can time their actions correctly, they could modify the shared resource in between Thread 1’s access calls, causing unexpected behavior or elevated privileges.
Mitigation
Users are advised to apply the vendor’s patch as soon as it is available to fix this vulnerability. If the patch cannot be applied immediately, a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can be used as a temporary mitigation measure. These tools can monitor and block any suspicious activities, thus reducing the risk of exploitation.