Race Condition Vulnerability in Windows Cloud Files by Microsoft

CVE-2025-55680

What is CVE-2025-55680?

CVE-2025-55680 represents a significant vulnerability found within the Windows Cloud Files Mini Filter Driver developed by Microsoft. This specific flaw is characterized as a time-of-check to time-of-use (TOCTOU) race condition, which occurs when a system checks for a certain condition and then subsequently uses the result of that check without ensuring that the underlying state hasn't changed in the interim. Exploitation of this vulnerability allows an authorized attacker to elevate their privileges locally on affected systems. Such privilege escalation could enable the attacker to gain access to sensitive data or execute unauthorized actions within the operating environment, potentially undermining the organization’s overall security posture.

Potential impact of CVE-2025-55680

1. Privilege Escalation: The primary impact of this vulnerability is the ability for users with existing access to elevate their privileges, which could allow them to gain administrative rights and perform actions beyond their intended permissions. This can lead to unauthorized data access or manipulation.

2. Compromise of Sensitive Data: With elevated access, attackers could potentially access sensitive files and information that would otherwise be protected, compromising the confidentiality and integrity of critical organizational data.

3. Increased Attack Surface: The existence of this vulnerability may encourage further exploitation attempts, leading to a cascade of security breaches. Attackers could leverage this flaw to establish footholds within the system, paving the way for subsequent cyberattacks, including data exfiltration and malware deployment.

News Articles

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CVE-2025-55680

Microsoft Windows Cloud Minifilter Flaw Enables Privilege Escalation

A security vulnerability in Microsoft Windows Cloud Minifilter has been patched, addressing a race condition that allowed attackers to escalate privileges

1 day ago

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