CVE-2020-1592 in Windows
Summary
by MITRE
<p>An information disclosure vulnerability exists when the Windows kernel improperly initializes objects in memory.</p> <p>To exploit this vulnerability, an authenticated attacker could run a specially crafted application. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system.</p> <p>The update addresses the vulnerability by correcting how the Windows kernel initializes objects in memory.</p>
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Analysis
by VulDB Data Team • 02/24/2026
This vulnerability represents a critical information disclosure flaw in the Windows kernel that stems from improper object initialization practices during memory management operations. The vulnerability falls under the category of memory corruption issues that can be exploited to gain unauthorized access to sensitive system information. According to the Common Weakness Enumeration catalog, this corresponds to weakness type CWE-248, which deals with an exception being thrown from a constructor or destructor. The flaw specifically manifests when the kernel fails to properly initialize kernel-mode objects in memory before they are accessed, creating potential information leaks that could be exploited by malicious actors.
The exploitation scenario requires an authenticated attacker who can execute a specially crafted application on the target system. This prerequisite significantly reduces the attack surface compared to unauthenticated vulnerabilities but still presents a serious security risk since the attacker already possesses valid credentials. The vulnerability allows successful exploitation to yield information that could be used to further compromise the user's system, potentially enabling privilege escalation or lateral movement within the network. The attack vector leverages the kernel's memory management functions to extract sensitive data that should remain protected from unauthorized access.
From an operational impact perspective, this vulnerability poses significant risks to enterprise security environments where authenticated access might be obtained through various means such as phishing attacks, credential theft, or insider threats. The information disclosure could potentially reveal kernel memory structures, system handles, or other sensitive data that would aid in developing more sophisticated attacks. The vulnerability affects Windows operating systems and could impact various system components that rely on proper kernel object initialization. The attack requires minimal privileges but can provide substantial information gathering capabilities that could be leveraged for additional compromise.
Microsoft addressed this vulnerability through a kernel memory initialization fix that ensures proper object initialization before memory access operations. The patch corrects how the Windows kernel handles memory allocation and object construction processes, preventing the information disclosure that occurred when kernel objects were not properly initialized. Organizations should prioritize applying this update as it directly addresses a known exploitation vector that could lead to further system compromise. The fix aligns with security best practices outlined in the MITRE ATT&CK framework under the information gathering and privilege escalation tactics, where adversaries often seek to extract system information to facilitate deeper system access and control.