CVE-2020-1528 in Windows
Summary
by MITRE
An elevation of privilege vulnerability exists when the Windows Radio Manager API improperly handles memory. To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges. The security update addresses the vulnerability by correcting how the Windows Radio Manager API handles memory.
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Analysis
by VulDB Data Team • 02/24/2026
The vulnerability described in CVE-2020-1528 represents a critical elevation of privilege flaw within the Windows Radio Manager API component of Microsoft Windows operating systems. This issue stems from improper memory handling practices that create opportunities for malicious actors to escalate their privileges from standard user level to administrative rights. The vulnerability specifically affects the Windows Radio Manager API which is responsible for managing radio-related functionalities on Windows systems, though its impact extends far beyond simple radio operations. The flaw exists in how the API processes memory allocations and deallocations, creating potential for memory corruption that can be exploited by attackers with local execution capabilities.
The technical exploitation of this vulnerability requires an attacker to first achieve code execution on the target system through some initial attack vector such as phishing, malicious software, or other privilege escalation techniques. Once execution is achieved, the attacker can leverage the memory handling flaw within the Windows Radio Manager API to manipulate memory structures and execute arbitrary code with elevated privileges. This type of vulnerability falls under the CWE-121 category of "Stack-based Buffer Overflow" or more specifically CWE-787 "Out-of-bounds Write" as it involves improper memory handling that allows for unauthorized memory access and modification. The attack vector aligns with ATT&CK technique T1068 which describes "Exploitation for Privilege Escalation" and demonstrates how attackers can leverage API flaws to gain administrative access to systems.
The operational impact of this vulnerability is severe as it provides attackers with a pathway to achieve system compromise and persistence. Once successfully exploited, the attacker gains administrative privileges which enables complete control over the affected system including the ability to install malware, modify system files, access sensitive data, and potentially establish backdoors for continued access. The vulnerability affects multiple Windows versions including Windows 10, Windows Server 2016, and Windows Server 2019, making it particularly dangerous as it impacts a wide range of enterprise and consumer systems. Organizations running these affected versions face significant risk of data breaches and system compromise, especially in environments where users have the ability to execute applications or where initial access can be gained through social engineering or other means.
Microsoft addressed this vulnerability through a security update that corrects the memory handling procedures within the Windows Radio Manager API. The fix involves implementing proper bounds checking and memory management practices that prevent the memory corruption conditions that enabled privilege escalation. System administrators should prioritize deployment of this update across all affected systems and implement additional security measures such as application whitelisting, user account control restrictions, and monitoring for suspicious privilege escalation attempts. The vulnerability highlights the importance of proper memory management in system APIs and demonstrates how seemingly minor flaws in system components can create significant security risks. Organizations should also consider implementing principle of least privilege configurations and regular security assessments to identify and remediate similar vulnerabilities in other system components that may be susceptible to memory-based exploitation techniques.