CVE-2020-1578 in Windows
Summary
by MITRE
An information disclosure vulnerability exists in the Windows kernel that could allow an attacker to retrieve information that could lead to a Kernel Address Space Layout Randomization (ASLR) bypass. An attacker who successfully exploited the vulnerability could retrieve the memory address of a kernel object. To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how the Windows kernel handles memory addresses.
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Analysis
by VulDB Data Team • 02/24/2026
The vulnerability identified as CVE-2020-1578 represents a critical information disclosure flaw within the Windows kernel architecture that fundamentally undermines system security mechanisms. This vulnerability specifically targets the kernel's memory management operations and exposes critical information that can be leveraged to bypass essential security protections. The flaw exists in how the Windows kernel processes and handles memory addresses during normal operational procedures, creating an unintended information leakage channel that adversaries can exploit. The vulnerability is particularly concerning because it directly impacts the core security infrastructure that protects operating systems from various attack vectors.
The technical implementation of this vulnerability stems from improper handling of kernel memory addresses within the Windows kernel execution environment. When legitimate processes interact with kernel objects, the system inadvertently exposes memory location information that should remain protected from user-mode applications. This occurs through specific kernel APIs or memory management functions that fail to properly sanitize or restrict access to address information. The flaw essentially creates a side-channel information leak where attackers can extract kernel memory addresses through carefully crafted application code. According to CWE classification, this vulnerability aligns with CWE-200, which covers "Information Exposure," and represents a specific implementation weakness in memory management controls.
The operational impact of CVE-2020-1578 extends beyond simple information disclosure, as it provides attackers with the foundation for more sophisticated exploitation techniques. By obtaining kernel memory addresses, adversaries can effectively circumvent Kernel Address Space Layout Randomization, a critical defense mechanism that randomizes memory locations to prevent exploitation of memory corruption vulnerabilities. This ASLR bypass capability significantly increases the success rate of subsequent attacks, particularly those targeting kernel memory corruption vulnerabilities. Attackers can leverage this information to craft more precise and effective exploits, as they now have knowledge of memory layout patterns that would otherwise remain obscured. The vulnerability's exploitation requires local system access and user authentication, making it particularly dangerous in environments where privilege escalation is a concern.
The exploitation process for this vulnerability requires an attacker to possess valid user credentials and execute a specially crafted application on the target system. This prerequisite means that the vulnerability cannot be exploited remotely, but it does represent a significant risk in environments where users have legitimate access to systems. The attack vector involves leveraging the kernel's memory management functions to extract address information, which then enables more sophisticated attacks. Security researchers have noted that this vulnerability demonstrates the importance of proper kernel memory handling and the potential consequences of information leakage in privileged execution contexts. The security update provided by Microsoft addresses this issue by modifying kernel memory handling procedures to prevent unauthorized address exposure, effectively closing the information disclosure channel.
Mitigation strategies for CVE-2020-1578 focus on implementing the official Microsoft security patch as the primary solution. Organizations should prioritize immediate deployment of the security update to prevent exploitation. Additionally, system administrators should implement comprehensive monitoring for suspicious local application execution and unusual memory access patterns. The vulnerability's characteristics align with ATT&CK technique T1059, which covers command and scripting interpreter, as attackers may use local execution to exploit this vulnerability. Network segmentation and privilege restriction measures can help reduce the attack surface, while regular security assessments should verify that systems have been properly patched. The vulnerability also emphasizes the importance of maintaining current security practices and staying informed about emerging threats that could exploit similar memory management flaws in operating system components.