Microsoft May 2025 Patch Tuesday Fixes 72 Vulnerabilities, Including 5 Zero-Day Exploits

Microsoft's May 2025 Patch Tuesday has addressed a total of 72 vulnerabilities, including five zero-day flaws that were actively exploited prior to the release. This comprehensive update underscores Microsoft's ongoing commitment to enhancing the security of its software ecosystem.

Breakdown of Vulnerabilities​

The 72 vulnerabilities are categorized as follows:

• 17 Elevation of Privilege Vulnerabilities
• 2 Security Feature Bypass Vulnerabilities
• 28 Remote Code Execution Vulnerabilities
• 15 Information Disclosure Vulnerabilities
• 7 Denial of Service Vulnerabilities
• 2 Spoofing Vulnerabilities

Detailed Analysis of Zero-Day Vulnerabilities​

Zero-day vulnerabilities are particularly concerning as they are exploited by attackers before developers have had the opportunity to issue patches. The five zero-day vulnerabilities addressed in this update are:

• CVE-2025-30400: Microsoft DWM Core Library Elevation of Privilege Vulnerability
  This flaw allows attackers to escalate privileges within the Desktop Window Manager (DWM) Core Library, potentially leading to unauthorized access and control over affected systems.
• CVE-2025-32701: Windows Common Log File System Driver Elevation of Privilege Vulnerability
  By exploiting this vulnerability, attackers can gain elevated privileges through the Common Log File System (CLFS) driver, compromising system integrity.
• CVE-2025-32706: Windows Common Log File System Driver Elevation of Privilege Vulnerability
  Similar to CVE-2025-32701, this flaw in the CLFS driver can be exploited to achieve elevated privileges, posing significant security risks.
• CVE-2025-32709: Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
  This vulnerability in the Ancillary Function Driver for WinSock can be leveraged by attackers to escalate privileges, potentially leading to full system compromise.
• CVE-2025-30397: Scripting Engine Memory Corruption Vulnerability
  A memory corruption issue in the scripting engine can be exploited to execute arbitrary code, allowing attackers to perform unauthorized actions on affected systems.

Notable Critical Vulnerabilities​

In addition to the zero-day flaws, several critical vulnerabilities have been addressed:

• CVE-2025-33072: Microsoft msagsfeedback.azurewebsites.net Information Disclosure Vulnerability
  This vulnerability could allow attackers to access sensitive information through the msagsfeedback.azurewebsites.net service.
• CVE-2025-29827: Azure Automation Elevation of Privilege Vulnerability
  Exploitation of this flaw could enable attackers to gain elevated privileges within Azure Automation, potentially leading to unauthorized control over automation processes.
• CVE-2025-29813: Azure DevOps Server Elevation of Privilege Vulnerability
  This vulnerability could allow attackers to escalate privileges within Azure DevOps Server, compromising development and deployment pipelines.
• CVE-2025-29972: Azure Storage Resource Provider Spoofing Vulnerability
  By exploiting this flaw, attackers could perform spoofing attacks within the Azure Storage Resource Provider, leading to unauthorized data access or manipulation.

Recommendations for Users and Administrators​

Given the severity and active exploitation of these vulnerabilities, it is imperative for users and administrators to:

• Apply Updates Promptly: Ensure that all systems are updated with the latest patches to mitigate the risks associated with these vulnerabilities.
• Review Security Configurations: Assess and strengthen security configurations to prevent potential exploitation.
• Monitor Systems for Unusual Activity: Implement monitoring to detect any signs of exploitation or unauthorized access.

By taking these proactive steps, organizations can enhance their security posture and protect against potential threats arising from these vulnerabilities.

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Source: CozumPark Microsoft Mayıs 2025 Patch Tuesday: 5 Zero-Day, 72 Zafiyet Kapatıldı - ÇözümPark