Microsoft has released its Patch Tuesday updates for May 2025, addressing a total of 78 vulnerabilities across its product ecosystem, with five identified as actively exploited zero-day flaws.
The updates affect products including Windows, Microsoft Office, Azure, Visual Studio, and more. Users and system administrators are strongly urged to apply these patches immediately.
🧩 Vulnerability Breakdown
Out of 72 vulnerabilities, Microsoft addressed:
- 🛠️ 29 Remote Code Execution
- ⬆️ 18 Elevation of Privilege
- 🔐 14 Information Disclosure
- 🚫 7 Denial of Service
- 🕵️♂️ 2 Spoofing
- 🧱 2 Security Feature Bypass
🔥 Actively Exploited Zero-Day Vulnerabilities
The five zero-days patched this month are:
1. CVE-2025-30397 (Microsoft Scripting Engine)
- CVSS Score: 7.5
- Impact: Remote Code Execution via malicious web content
- Status: Exploited in the wild
2. CVE-2025-30400 (Windows DWM)
- CVSS Score: 7.8
- Impact: Local Privilege Escalation
- Status: Actively exploited
3. CVE-2025-32701 (Windows Common Log File System Driver)
- CVSS Score: 7.8
- Impact: Privilege Escalation
- Status: Exploited
4. CVE-2025-32706 (Windows Common Log File System Driver)
- CVSS Score: 7.8
- Impact: Privilege Escalation
- Status: Exploited
5. CVE-2025-32709 (Windows Ancillary Function Driver for WinSock)
- CVSS Score: 7.8
- Impact: Privilege Escalation
- Status: Exploited
🗂️ Office and Windows Vulnerabilities
Multiple high-risk vulnerabilities were found in Office and Windows components:
CVE-2025-29976(SharePoint) – Elevation of PrivilegeCVE-2025-30393(Excel) – Remote Code ExecutionCVE-2025-24063(Windows Kernel) – “Exploitation More Likely”
📋 Sample Vulnerability Table
| CVE Number | Component | Impact | Severity |
|---|---|---|---|
| CVE-2025-29966 | Remote Desktop Client | Remote Code Execution | Critical |
| CVE-2025-30377 | Microsoft Office | Remote Code Execution | Critical |
| CVE-2025-26684 | Microsoft Defender | Elevation of Privilege | Important |
| CVE-2025-29959 | RRAS | Information Disclosure | Important |
| CVE-2025-29968 | Active Directory Certificate Services | Denial of Service | Important |
| CVE-2025-29979 | Microsoft Excel | Remote Code Execution | Important |
| CVE-2025-26685 | Defender for Identity | Spoofing | Important |
| CVE-2025-32703 | Visual Studio | Information Disclosure | Important |
| CVE-2025-21264 | VS Code | Security Feature Bypass | Important |
🔽 The full list includes 78 vulnerabilities. Visit the full article for the complete table:
Microsoft Patch Tuesday – May 2025
✅ Recommendations
- Update all Windows and Office installations ASAP
- Monitor your systems for CVE exploit indicators
- Use vulnerability scanners to verify patch deployment
- Stay informed about Microsoft Patch Tuesday updates every month
