Cve 2026 55055
The latest Cve 2026 55055 coverage — news, analysis, and updates from the WindowsNews.AI desk.
July 2026 Patch Tuesday Seals Critical Media Foundation Hole That Could Hand Control to Attackers
Microsoft's July 14, 2026 Patch Tuesday fixes CVE-2026-56189, a heap-based buffer overflow in Windows Media Foundation that could let attackers execute code by tricking a user into opening a malicious media file. With a CVSS score of 7.8, the flaw requires user interaction but is rated high impact across confidentiality, integrity, and availability. The patch is included in cumulative updates for most supported Windows versions, but Windows 10 22H2 users without Extended Security Updates are left exposed, making inventory and migration a priority.
Microsoft Patches Record 570 Flaws, Including Exploited AD FS and SharePoint Zero-Days
Microsoft's July 2026 Patch Tuesday set a record with 570 security fixes, including two actively exploited zero-days in AD FS and SharePoint Server, and a publicly disclosed BitLocker bypass. The client update KB5101650 for Windows 11 24H2/25H2 also delivers quality-of-life improvements and a compatibility change that IT teams must test. Organizations should prioritize the AD FS and SharePoint patches, harden BitLocker protections, and adjust to the new AI-driven cadence of larger, more frequent updates.
Microsoft Closes Win32k Data Leak: July Updates Patch CVE-2026-56184
Microsoft's July 14, 2026 security updates address CVE-2026-56184, a local Win32k vulnerability that could let attackers read sensitive data. While rated Medium severity, the fix is critical for systems where local access is common. This article explains the flaw, who is at risk, and how to deploy the patch safely.
Windows 11 July 2026 Security Patches Plug MIDI Privilege Escalation Hole – KB5101650 and KB5101649 Explained
Microsoft’s July 14, 2026 Patch Tuesday includes a fix for CVE-2026-56187, a use-after-free privilege escalation bug in the Windows MIDI Service Module affecting all supported Windows 11 releases. The update, delivered via KB5101650 or KB5101649 depending on your version, moves systems to patched builds that close a local attack vector requiring no user interaction. While no active exploits are known, the cluster of three MIDI-related flaws this month makes immediate patching wise.
Why Every Windows User Should Apply July's KB5101650 Fix for NTFS Privilege Escalation
Microsoft addressed CVE-2026-56182, a high-severity NTFS elevation-of-privilege vulnerability, in its July 2026 cumulative updates. The flaw, rated 7.8 CVSS, could let a local attacker gain full system control after obtaining any foothold on a Windows machine. All users should install the appropriate KB fix—such as KB5101650 for Windows 11 24H2/25H2—immediately to eliminate the risk.
Patch Now: Microsoft Closes Windows 11 MIDI Service Flaw That Allowed Privilege Escalation
Microsoft's July 2026 Patch Tuesday fixes CVE-2026-56183, a high-severity privilege escalation vulnerability in the Windows 11 MIDI Service Module impacting versions 24H2, 25H2, and 26H1. The article details which builds contain the fix, explains the practical risk for home users and IT admins, and provides step-by-step patching guidance. It also highlights a compatibility hold for certain Dell systems and notes two additional MIDI bugs disclosed in the same month.
Critical 9.8-Rated RDP Vulnerability Fixed in July 2026 Patch—What You Need to Do Now
Microsoft's July 2026 Patch Tuesday fixes CVE-2026-56190, a 9.8-rated RDP vulnerability that allows unauthenticated remote code execution. All Windows versions from 10/11 to Server 2012-2025 are affected. Administrators must patch immediately, verify build numbers, and remove any internet-facing RDP access.
Microsoft’s July Patches Fix a Stealthy Windows WebView Flaw—Here’s How to Check Your Build
Microsoft’s July 2026 security updates fix CVE-2026-56173, a high-severity privilege escalation vulnerability in Windows WebView. The use-after-free bug affects Windows 10, 11, and Server, and could let a local attacker gain system-level control. Patches are delivered via cumulative updates; verifying the resulting build number is critical because the vulnerable WebView code is embedded throughout the OS and not just in the browser.
Microsoft Patches MSXML Flaw That Could Let Attackers Seize Admin Control on Windows
Microsoft’s July 14, 2026 security updates fix CVE-2026-50359, a high-severity privilege escalation flaw in the Windows MSXML library that could allow a standard user to gain full administrative control. The use-after-free bug affects a wide range of supported Windows releases, from Server 2012 to Windows 11 26H1, but has not been observed in active attacks. The article explains the vulnerability, details the affected builds, outlines practical steps for home users and IT admins, and emphasizes the importance of timely patching.
Microsoft Patches SharePoint Spoofing Flaw: Here's How to Lock Down Your Servers
Microsoft’s July 2026 SharePoint patches fix CVE-2026-56157, a spoofing vulnerability that allows an authenticated attacker with low privileges to alter content without user interaction. The article details affected builds, step-by-step patching instructions, workflow prerequisites, and guidance to limit exposure, emphasizing that the same update closes multiple other security flaws.
Microsoft Fixes Critical 9.8-Rated DHCP Bug—Apply the July 2026 Update Now
Microsoft’s July 2026 security updates address CVE-2026-56159, a critical 9.8-rated remote-code-execution bug in the Windows DHCP Server service. The heap-based buffer overflow can be triggered by an unauthenticated attacker over the network and affects servers from 2012 to 2025. Administrators should apply the patch immediately, following careful procedures to avoid DHCP service interruptions, while monitoring for any exploitation activity.
Patch Now: Excel’s July 2026 Security Hole Could Let Attackers Hijack Your PC
Microsoft’s July 14, 2026 security update fixes CVE-2026-56156, a heap-based buffer overflow in Excel that lets attackers execute code when users open a malicious file. The vulnerability scores a high CVSS 7.8 and affects Microsoft 365 Apps, Office LTSC 2021/2024, and Office for Mac. This service-journalism piece explains what the flaw does, how attacks work, which versions need patching, and exactly how to verify and deploy the update.
Excel RCE Vulnerability CVE-2026-55947 Patched: Why You Should Update Office Today
Microsoft's July 14, 2026 security patches include a fix for CVE-2026-55947, a remote code execution vulnerability in Excel. Attackers can spread malicious spreadsheets via email or downloads, but the exploit requires a user to open the file. The patch covers a broad range of Office editions, and users should update promptly while maintaining cautious file-handling habits.