CVE-2025-58738 in Windows
Summary
by MITRE • 10/14/2025
Use after free in Inbox COM Objects allows an unauthorized attacker to execute code locally.
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Analysis
by VulDB Data Team • 10/16/2025
This vulnerability resides in the Inbox COM objects implementation within Microsoft Windows operating systems, representing a critical use-after-free flaw that enables local code execution by unauthorized attackers. The vulnerability manifests when the system processes certain COM object references that have already been freed from memory, creating a scenario where malicious code can exploit the dangling pointer to gain unauthorized access to system resources. Such flaws typically arise from improper memory management practices where object references are not properly validated before access, allowing attackers to manipulate memory contents and potentially execute arbitrary code with elevated privileges.
The technical nature of this vulnerability aligns with CWE-416, which specifically addresses use-after-free conditions in software implementations. This weakness occurs when a program continues to reference memory after it has been freed, creating opportunities for attackers to corrupt memory contents or redirect execution flow. The attack vector is particularly concerning as it operates locally, meaning that an unauthenticated user with minimal privileges can leverage this flaw to escalate their access level and potentially compromise the entire system. The COM object framework's complex interaction with Windows messaging systems creates multiple potential entry points for exploitation, making this vulnerability particularly dangerous in enterprise environments where multiple applications rely on COM components.
Operationally, this vulnerability presents significant risks to organizations as it allows for privilege escalation without requiring network connectivity or complex attack chains. Attackers can potentially leverage this flaw to establish persistent access, escalate privileges to SYSTEM level, or deploy additional malware payloads. The local execution requirement means that attackers do not need to bypass network security controls or exploit remote vulnerabilities, making this attack vector particularly stealthy and difficult to detect through traditional network monitoring approaches. The impact extends beyond individual system compromise to potentially enable lateral movement within networks where multiple systems share similar COM object configurations.
Mitigation strategies should prioritize immediate patch deployment through Microsoft's regular security updates, as the vulnerability affects core Windows components that are difficult to isolate or disable without impacting system functionality. Organizations should implement comprehensive memory protection mechanisms including address space layout randomization and data execution prevention to reduce exploitation success rates. Network segmentation and privilege separation measures can help limit the potential impact of successful exploitation attempts. Security monitoring should focus on identifying unusual COM object usage patterns and memory access anomalies that might indicate exploitation attempts. Additionally, regular vulnerability assessments and penetration testing should be conducted to identify systems that may be running outdated components or configurations that could be vulnerable to similar memory corruption flaws. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically targeting the use of system services and COM objects for unauthorized access, making it a critical concern for organizations implementing comprehensive security frameworks.