CVE-2026-58544 in Windows
Summary
by MITRE • 07/14/2026
Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 07/15/2026
This vulnerability represents a critical use-after-free condition within Windows Management Services that enables local privilege escalation for authenticated attackers. The flaw occurs when the system fails to properly validate object references after memory deallocation, creating opportunities for malicious code execution. The vulnerability stems from improper handling of memory management operations within the Windows Management Instrumentation service components, specifically affecting the wmisvc.exe process that manages system monitoring and configuration tasks.
The technical implementation involves a race condition where an attacker can manipulate memory objects that have been freed but not yet reinitialized, allowing for arbitrary code execution with elevated privileges. This type of vulnerability maps directly to CWE-416 which defines use-after-free conditions as a common class of memory safety issues. The attack vector requires local authentication since the service operates with system-level permissions, making it particularly dangerous in environments where users have legitimate access rights. According to ATT&CK framework, this represents a privilege escalation technique under T1068 which encompasses various methods for gaining higher system privileges.
The operational impact extends beyond simple local exploitation as attackers can leverage this vulnerability to establish persistent access within compromised systems while maintaining elevated privileges. The Windows Management Services component is widely deployed across enterprise environments making this vulnerability particularly attractive to threat actors seeking long-term access to target networks. Organizations running affected versions of Windows are at risk of unauthorized privilege escalation attacks that could lead to complete system compromise and data exfiltration.
Mitigation strategies include applying Microsoft security patches promptly, implementing least privilege principles for service accounts, and monitoring for suspicious WMI activity patterns. Network segmentation can help limit the attack surface while regular vulnerability assessments should focus on identifying potentially vulnerable WMI configurations. System administrators should also consider disabling unnecessary WMI services when not required for business operations, as this reduces potential attack vectors. Additionally, implementing behavioral monitoring solutions that detect anomalous privilege escalation attempts can provide early warning indicators of exploitation attempts targeting this specific vulnerability.