CVE-2025-24050 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-2025-24050 represents a critical heap-based buffer overflow flaw within the Windows Hyper-V hypervisor component. This issue specifically affects the Role: Windows Hyper-V functionality and creates a significant security risk by allowing authenticated attackers to achieve local privilege escalation. The vulnerability stems from improper input validation and memory management within the Hyper-V virtualization framework, where insufficient bounds checking enables malicious code to overwrite adjacent memory regions in the heap allocation space. Such flaws are particularly dangerous in virtualization environments where the hypervisor operates with elevated privileges and maintains direct access to underlying system resources.
The technical exploitation of this vulnerability occurs through carefully crafted inputs that trigger the buffer overflow condition within Hyper-V's memory management routines. When an authenticated user executes malicious code that leverages this flaw, the overflow can overwrite critical heap metadata or adjacent memory structures, potentially allowing the attacker to manipulate control flow instructions or inject malicious code into the privileged execution context. This type of vulnerability falls under CWE-121 Heap-based Buffer Overflow, which is classified as a fundamental memory safety issue that has been consistently identified as a primary attack vector in numerous security assessments and penetration testing exercises. The attack surface is particularly concerning given that Hyper-V operates at the kernel level with extensive system privileges, making successful exploitation directly translate to system compromise.
The operational impact of this vulnerability extends beyond simple privilege escalation as it fundamentally undermines the security model of virtualized environments. An attacker who successfully exploits this flaw can gain complete control over the host system, potentially compromising all virtual machines running on that host, accessing sensitive data, and establishing persistent backdoors. The implications are especially severe in enterprise environments where Hyper-V is widely deployed for server virtualization, cloud infrastructure, and data center operations. The vulnerability affects systems running Windows Server with Hyper-V role enabled, particularly those configured with default security settings that do not implement additional mitigations against heap-based attacks. This type of attack vector aligns with ATT&CK technique T1068, which covers the exploitation of local privileges through improper input validation, and represents a critical gap in the security posture of virtualized environments.
Mitigation strategies for CVE-2025-24050 should prioritize immediate patch deployment from Microsoft, as the vulnerability requires core hypervisor modifications to address the underlying memory management flaws. Organizations should implement additional security controls such as enabling Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) to make exploitation more difficult, while also considering the deployment of hypervisor-level security modules that can detect and prevent malicious memory manipulation attempts. System administrators should conduct comprehensive vulnerability assessments to identify systems running affected Hyper-V configurations and implement network segmentation to limit potential attack surfaces. The vulnerability also underscores the importance of maintaining updated security frameworks and implementing continuous monitoring solutions that can detect anomalous memory access patterns or privilege escalation attempts. Additionally, organizations should review their virtualization security policies to ensure that least privilege principles are enforced across all Hyper-V environments and that appropriate access controls are implemented to limit the potential impact of such vulnerabilities.