Microsoft
Curated coverage and analysis in this editorial area.
LegacyHive: Nightmare Eclipse's Ninth Zero-Day Pierces Fully Patched Windows
Nightmare Eclipse has released LegacyHive, a zero-day exploit targeting the Windows User Profile Service to load arbitrary registry hi…
CVE-2026-40400: RCE in PowerShell via Help File, Patch Available
ZDI-26-414 discloses a directory traversal flaw in PowerShell help file parsing that leads to remote code execution with user interact…
SharePoint: Patch for CVE-2026-55126, an Authenticated XSS Rated CVSS 8.1
Microsoft has fixed an XSS vulnerability in SharePoint's SPFieldMultiLineText class. The CVSS 8.1 score and ease of remote exploitatio…
SharePoint Critical RCE via Cryptographic Signature Flaw: The Token Danger
CVE-2026-50522 enables unauthenticated remote code execution on SharePoint Server by bypassing cryptographic verification on session t…
SharePoint On-Premises Under Attack: Three Days to Patch Actively Exploited RCE
Microsoft confirmed active exploitation of CVE-2026-58644 in SharePoint Server on-premises. CISA added the flaw to the KEV catalog wit…
Windows WMI: ZDI-26-415 Vulnerability Allows Escalation to SYSTEM
CVE-2026-49805 in Windows WMI Providers enables local privilege escalation to SYSTEM. Microsoft has released patches and rates exploit…
ZDI-26-416: Hyper-V netvsc.sys Bug Lets Local VM Attacker Escalate to Kernel
The ZDI-26-416 vulnerability in Microsoft Hyper-V's netvsc.sys driver allows a low-privilege attacker inside a Windows VM to escalate…
Microsoft July 2026 Patch Tuesday: Record Vulnerability Volume Forces a Reckoning
Microsoft's July 2026 Patch Tuesday delivers a record-breaking number of vulnerabilities. Two zero-days are already under active explo…
Microsoft Revokes 11 Legacy UEFI Shims: Secure Boot Bypassed via Signed Bootloaders
Eleven Microsoft-signed UEFI shim bootloaders allowed Secure Boot bypass on any trusting system. Revocation arrived with the June 2026…
SharePoint JWT Bypass and the AI Agent That Rewrites Zero-Day Discovery
Microsoft patched a SharePoint authentication bypass (CVE-2026-55040) discovered by Rapid7 using agentic AI. The CVSS 5.3 rating masks…
GodDamn Ransomware Uses Microsoft-Signed Driver to Disable EDR
The GodDamn ransomware, a rebrand of the Hyadina family, leverages the PoisonX driver — signed with a valid Microsoft Windows Hardware…
Microsoft: AI Will Make Patch Tuesday Permanently More Demanding
Microsoft EVP Pavan Davuluri confirmed on July 9, 2026 that AI will permanently increase the volume of security updates in each Patch…