# Microsoft Patches Record Number of Windows Security Flaws Update released for 570 security vulnerabilities and two zero-day exploits. - **Source:** [Latest news](https://brifing.si/source/77d15218-219f-472d-bf40-31b5646d2942) - **Published:** 2026-07-15 - **Topic:** [Software & Engineering](https://brifing.si/c/engineering) - **Original article:** - **On Brifing:** https://brifing.si/s/e525f881-0005-40cf-ab88-87b64637441e ## Record Number of Security Flaws Microsoft patched a record 570 Windows security vulnerabilities in July. This marks the highest number of fixes in a single month for the company. The update is automatically downloaded and installed for Windows 10 and 11 users. ## Zero-Day Exploits Among the patched vulnerabilities are three zero-day exploits, two of which have been actively exploited. These flaws affect critical systems like Microsoft's Active Directory and SharePoint, posing significant risks to organizations. ## AI-Powered Scanning Microsoft uses an AI-powered scanning tool to detect security vulnerabilities. This tool reduces false positives, allowing engineers to get results faster. This shortens the window of opportunity for attackers to exploit zero-day vulnerabilities. ## BitLocker Security Flaw One of the patched vulnerabilities targets Microsoft's BitLocker encryption feature. This flaw allows someone with physical access to bypass encryption and view personal files. This is a major security risk, especially for lost or stolen devices. ## New Features and Improvements The update not only closes security gaps but also brings improvements to features like File Explorer and Bluetooth. For example, File Explorer now opens faster, and Bluetooth device connections are more reliable and faster. ## Importance of the Update Given the three zero-day exploits and 61 critical vulnerabilities, this update is highly important. Microsoft has paused the update for some Dell computers due to compatibility issues, but it is recommended for all users to install this update. ## Sources covering this story - https://www.zdnet.com/article/microsoft-patches-570-vulnerabilities-exploited-zero-days/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._