Microsoft’s August 2026 Patch Tuesday Closes 394 Flaws, Including One Zero-Day Already Under Attack
Microsoft's August 2026 security update addresses 394 vulnerabilities spanning Windows, Office, SharePoint, Azure, and developer tools, including three zero-days. One of them, a Windows kernel driver flaw tied...
How a Crafted SVG File Could Have Handed Attackers SYSTEM Access on Microsoft’s Bing Servers
Three critical, now-patched vulnerabilities in Microsoft's infrastructure show how an everyday image upload feature in Bing Images became a path to remote code execution as NT AUTHORITY\SYSTEM. Researchers...
Microsoft Ships KB5095189 Cumulative Update to Patch the Windows 11 Setup Experience
Microsoft's KB5095189 update patches the Windows 11 setup experience for versions 24H2 and 25H2. It carries no CVE, but enterprises relying on Autopilot-style provisioning should confirm devices aren't...
81 Million Login Attempts: Massive Password Spray Campaign Bypasses MFA to Compromise Azure and Microsoft 365 Accounts
A massive automated campaign made 81 million login attempts against Microsoft 365 and Azure CLI accounts between June 12 and June 26, 2026, successfully compromising 78 accounts across...
Microsoft Secure Boot Certificates Expire — Over a Billion PCs and Linux Systems at Risk
Microsoft's original Secure Boot certificates have begun expiring as of June 24, 2026, affecting over a billion UEFI-capable PCs worldwide. Systems that fail to migrate to the 2023...
AutoJack: A Single Malicious Web Page Can Hijack Your AI Agent and Execute Arbitrary Code
A critical three-vulnerability exploit chain called AutoJack allows a single malicious web page to hijack Microsoft AutoGen Studio's browsing agent and execute arbitrary code on the developer's machine,...
Microsoft Lets connectivity.office.com TLS Certificate Expire, Breaking Enterprise Microsoft 365 Diagnostics
Microsoft allowed the TLS certificate for connectivity.office.com — a critical enterprise Microsoft 365 diagnostic endpoint — to expire on June 14, 2026, triggering browser security warnings and breaking...
Microsoft Releases Emergency KB5089573 for Windows 11 to Permanently Fix Patch Tuesday Install Failures
Microsoft has released KB5089573, a critical out-of-band update for Windows 11, permanently fixing the EFI System Partition space issue that caused widespread 0x800f0922 installation failures following May 2026...