Despite the critical nature of these vulnerabilities, Microsoft did not provide indicators of compromise or telemetry data to assist defenders, leaving details about targeted victims undisclosed.

Experts warn that the prevalence of these vulnerabilities may signal an uptick in cyberattacks later this year, particularly in the realms of phishing and ransomware.

Microsoft estimates that nine additional CVEs are likely to be exploited in the next 30 days, highlighting the ongoing threat landscape.

Among the most critical issues addressed are five actively exploited zero-day vulnerabilities, specifically CVE-2025-30397, CVE-2025-30400, CVE-2025-32701, CVE-2025-32706, and CVE-2025-32709, which carry CVSS scores ranging from 7.5 to 7.8, indicating a significant risk.

The Windows Common Log File System (CLFS) driver has been identified with two critical privilege escalation vulnerabilities affecting all supported versions of Windows 10 and 11.

On May 13, 2025, Microsoft released a substantial update comprising 78 security patches aimed at addressing various vulnerabilities across its products, including Windows and Microsoft Office.

Users are strongly advised to back up their devices and operating systems before applying these updates, as this precaution can help prevent potential data loss.

Microsoft has flagged three high-severity vulnerabilities in Office as being more likely to be exploited, underscoring the urgency for users to apply the latest patches.

The updates include fixes for critical issues affecting Windows 10 and various Windows Server versions, as well as a wide range of Microsoft products including .NET, Visual Studio, and Azure services.

The release includes detailed appendices that categorize vulnerabilities by severity and predicted exploitability timelines, providing users with essential information for prioritizing updates.

Windows 10 version 22H2 has 34 vulnerabilities reported, with three classified as critical, while Windows 11 versions have similarly high counts of vulnerabilities, emphasizing the need for prompt updates.