CVE-2020-0764 in Windows
Summary
by MITRE • 10/17/2020
<p>An elevation of privilege vulnerability exists when the Windows Storage Services improperly handle file operations. An attacker who successfully exploited this vulnerability could gain elevated privileges.</p> <p>To exploit the vulnerability, an attacker would first need code execution on a victim system. An attacker could then run a specially crafted application.</p> <p>The security update addresses the vulnerability by ensuring the Windows Storage Services properly handle file operations.</p>
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Analysis
by VulDB Data Team • 02/24/2026
The vulnerability identified as CVE-2020-0764 represents a critical elevation of privilege flaw within Windows Storage Services that could enable malicious actors to escalate their system access privileges. This weakness resides in how the Windows Storage Services component processes file operations, creating an exploitable condition that adversaries could leverage to gain higher-level system permissions. The vulnerability specifically affects the Windows operating system's storage management functionality, where improper handling of file operations creates opportunities for privilege escalation attacks.
The exploitation pathway for CVE-2020-0764 requires an initial foothold through code execution on the target system, making it a post-compromise vulnerability that builds upon existing compromise scenarios. Attackers must first achieve a position where they can execute arbitrary code on the victim machine, which could occur through various attack vectors such as phishing, drive-by downloads, or other initial compromise techniques. Once the attacker has code execution capability, they can run a specially crafted application designed to exploit the file operation handling flaw in Windows Storage Services. This prerequisite makes the vulnerability less likely to be exploited in the wild without prior compromise, but it represents a significant escalation risk for attackers who have already gained initial access.
The technical flaw manifests in the improper handling of file operations within the Windows Storage Services framework, which typically manages storage-related functions including file system operations, storage pools, and volume management. This improper handling creates opportunities for attackers to manipulate storage service behaviors in ways that could lead to privilege elevation. The vulnerability likely involves issues such as inadequate input validation, improper access control checks, or flawed privilege boundary enforcement during file operation processing. The security update addresses this by implementing proper file operation handling mechanisms that ensure Windows Storage Services correctly validate and process file operations without creating privilege escalation opportunities.
From a cybersecurity perspective, this vulnerability aligns with CWE-264, which covers permissions, privileges, and access control issues, and demonstrates the critical importance of proper privilege management in system services. The operational impact of successful exploitation could enable attackers to gain SYSTEM-level privileges, providing complete control over the affected system including access to all files, registry settings, and system resources. This makes CVE-2020-0764 particularly dangerous as it allows attackers to move laterally within networks, persist in compromised systems, and potentially access sensitive data or infrastructure resources. The vulnerability's presence in core Windows services means it could affect a wide range of system configurations and deployment scenarios.
Organizations should prioritize patching this vulnerability through Microsoft's security updates, as the remediation directly addresses the root cause of the privilege escalation issue. System administrators should also implement additional monitoring for suspicious file operations and privilege elevation activities within Windows Storage Services. The vulnerability's classification under the ATT&CK framework would likely map to privilege escalation techniques, specifically those involving service manipulation or exploitation of Windows system services. Security teams should consider this vulnerability as part of their broader vulnerability management strategy, particularly in environments where Windows Storage Services are actively used or where systems may be vulnerable to initial compromise through other attack vectors.