Overview
CVE-2025-47315 is a critical cybersecurity vulnerability that affects systems handling guest virtual machines (VMs). This vulnerability arises due to memory corruption while handling repeated memory unmap requests from guest VMs and can lead to potential system compromise or data leakage. It’s imperative to address this vulnerability because of the high risk it poses to data integrity and system stability.
Vulnerability Summary
CVE ID: CVE-2025-47315
Severity: High (7.8 CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
VMware ESXi | 6.5, 6.7, 7.0
Microsoft Hyper-V | 2019, 2022
How the Exploit Works
The exploit takes advantage of a flaw in the memory handling component of the system. When a guest VM sends repeated memory unmap requests, the system’s memory management fails to handle these requests correctly, leading to memory corruption. An adversary can potentially manipulate these corrupted memory regions to inject malicious code or extract sensitive information, resulting in system compromise or data leakage.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited using a shell command:
#!/bin/bash
for i in {1..10000}
do
echo "Unmap Memory Request $i" | nc target_system_IP VM_service_port
doneThis script sends a large number of unmap memory requests to the target system’s VM service port, potentially causing the memory corruption described above.
