Introduction

Hi there, CheckYourLogs.net fans! I have been working with a friend to teach AI about Windows patching. While it might not be able to prevent issues in your environment directly, I have found that the weekly reports in blog format have been gaining interest.

Look at the current summary. If you need to drill down further, a blog is linked below. If that isn’t enough information, we have the CVE reports you can drill through in extreme detail.

Blog Introduction

This month’s Patch Tuesday cycle from Microsoft is one of the most critical in recent memory — and the PortalFuse Weekly Security Report delivers an in-depth breakdown to help IT admins stay ahead of emerging threats.

🔐 Top Threat Category: Elevation of Privilege (EoP)
With 33 EoP vulnerabilities, attackers have plenty of options to escalate from low-level access to SYSTEM or even domain admin.

💥 Critical Remote Code Execution (RCE) flaws in Telephony, TCP/IP, Hyper-V, and Remote Desktop Client also stand out — all emphasizing the importance of timely patching.

🛠️ Top CVEs to Prioritize:

🔼 Elevation of Privilege

  • CVE-2025-29812 – DirectX Graphics Kernel
  • CVE-2025-29811 – Windows Mobile Broadband Driver
  • CVE-2025-27492 & CVE-2025-26649 – Secure Channel Race Conditions
  • CVE-2025-27475 – Windows Update Stack
  • CVE-2025-29824 – CLFS Driver (Use-after-Free)
  • CVE-2025-27739 – Windows Kernel Pointer Dereference
  • CVE-2025-24074, -24073, -24062, -24060, -24058 – DWM Core Library

🌐 Remote Code Execution

  • CVE-2025-27729 – Windows Shell (Use-after-Free)
  • CVE-2025-27491 – Hyper-V
  • CVE-2025-27487 – Remote Desktop Client
  • CVE-2025-26686 – TCP/IP Stack
  • CVE-2025-26670 & CVE-2025-26663 – LDAP Client
  • CVE-2025-27481, -27477, -21222, -21221, -21205 – Windows Telephony (CVSS 8.8)

🧾 Information Disclosure

  • CVE-2025-27742 – NTFS
  • CVE-2025-27738 & CVE-2025-21197 – ReFS/NTFS (Manual fix enablement required!)
  • CVE-2025-26672 & CVE-2025-26669 – RRAS

🚫 Denial of Service (DoS)

  • CVE-2025-26651 – Local Session Manager
  • CVE-2025-27473 – HTTP.sys
  • CVE-2025-27469 & CVE-2025-26673 – Windows LDAP

🔓 Security Feature Bypass (SFB)

  • CVE-2025-29809 – Kerberos (Credential Guard Bypass)
  • CVE-2025-26678 – WDAC
  • CVE-2025-26635 – Windows Hello

🕵️ Spoofing

  • CVE-2025-26644 – Windows Hello Spoofing
  • CVE-2025-24071 – File Explorer Spoofing

🧭 Also in scope: Edge (Chromium) vulnerabilities, including CVE-2025-25000 and CVE-2025-29815, both allowing remote code execution via crafted websites or links.

📌 SysAdmins: Prioritize these KBs:
KB5055518, KB5055523, KB5055528 — plus registry changes for NTFS/ReFS fixes (KB5058189).

Report

🔗 Full report: PortalFuse Weekly Report

#CyberSecurity #PatchTuesday #Intune #EndpointManagement #Windows11