CVE-2025-24048 in Windows
Summary
by MITRE • 03/11/2025
Heap-based buffer overflow in Role: Windows Hyper-V allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 07/02/2025
The vulnerability identified as CVE-2025-24048 represents a critical heap-based buffer overflow within the Windows Hyper-V virtualization platform that specifically affects the Role component. This flaw exists in the memory management handling of Hyper-V's virtual machine execution environment, creating a potential pathway for privilege escalation attacks. The vulnerability is particularly concerning because it requires only authorized access to the system, meaning that an attacker with legitimate user credentials can exploit this weakness to gain elevated privileges. The heap-based nature of the overflow indicates that the vulnerability occurs when the system attempts to write data beyond the allocated memory boundaries of heap-allocated structures used by Hyper-V's role management functionality.
The technical exploitation of this vulnerability leverages the inherent memory handling mechanisms within Hyper-V's Windows Role implementation, where insufficient bounds checking allows an attacker to overwrite adjacent memory locations in the heap. This type of vulnerability falls under CWE-121 heap-based buffer overflow category, which is classified as a memory safety error that can lead to arbitrary code execution. The attack vector requires local system access and leverages the trusted execution environment of Hyper-V's role management subsystem to bypass normal privilege boundaries. The flaw is particularly dangerous because it operates within the virtualization layer that typically maintains elevated privileges and controls critical system resources.
From an operational perspective, this vulnerability poses significant risk to enterprise environments that utilize Hyper-V for virtual machine deployment and management. Attackers with standard user accounts can exploit this weakness to escalate their privileges to system level, potentially gaining access to sensitive data, system resources, and other virtual machines running on the same host. The impact extends beyond individual system compromise as it can enable lateral movement within virtualized environments where multiple VMs share the same physical host. This vulnerability directly aligns with ATT&CK technique T1068 which covers privilege escalation through local system exploits, and T1496 which addresses virtualization and container escapes.
Organizations should implement immediate mitigations including applying the latest Windows updates and security patches that address the heap overflow in Hyper-V's role management component. System administrators should also consider implementing additional security controls such as restricting local user access to Hyper-V management interfaces, enabling enhanced logging for virtualization activities, and monitoring for anomalous privilege escalation events. The vulnerability demonstrates the critical importance of securing virtualization platforms as they serve as attack vectors for privilege escalation and can provide attackers with elevated access to entire virtualized infrastructures. Regular security assessments of virtualization environments should include specific testing for memory safety vulnerabilities in hypervisor components, as these flaws can have cascading effects throughout the entire enterprise security posture.