October Windows Server updates break Exchange sign-in and mail flow
A new 512-call Endpoint Mapper limit can stall OWA and delivery; Microsoft offers a registry workaround, not an uninstall.
68
Product
Windows Server
- Mentions · 7d0
- Mentions · 30d6
- All mentions16
- First seenAug 19, 2026
- Last mentioned11d ago
Timeline
16 articles · newest firstWhy Active Directory weaknesses stay open for years in teams with one or two admins
intcube led 27 municipalities through a 12-week program to harden Windows Server and Active Directory.
28
Microsoft Windows Server 0-Day Flaw Lets Attackers Crash Servers With a Single Packet
Microsoft patched CVE-2026-70111, a Windows Server DFS flaw that can crash servers with one malicious SMB response.
55
Microsoft fixes VPN issues caused by September Windows updates
Microsoft's October updates fix Always On VPN failures on Windows 11 caused by September 2026 patches.
36
Microsoft: Outdated Windows devices will stop receiving security updates
Unsupported Windows devices will lose security updates after Windows Update certificates expire in 2027.
55
Microsoft Pushes Enterprises to Test Post-Quantum Certificates Before Large-Scale Migration
Microsoft's post-quantum TLS pilot asks enterprises to test ML-DSA certificates before production migration.
46
Microsoft plans to deprecate Windows Deployment Services
Microsoft will deprecate Windows Deployment Services starting with the Windows Server release after 2025.
30
AI-Powered Phishing Platform EvilTokens Disrupted by Microsoft
Microsoft disrupted EvilTokens, an AI-powered phishing platform that compromised 12,000+ email accounts across 10,000+ organizations.
75
Microsoft: September Windows updates break Always On VPN connections
September 2026 Windows updates break Always On VPN connections when automatic protocol selection is enabled.
45
Serial Microsoft 0-day hunter drops yet another Defender exploit
Researcher Nightmare Eclipse released ShieldCrash, a Microsoft Defender zero-day PoC that bypasses September patches and reads files as SYSTEM.
55
Windows Remote Desktop Client Vulnerability Allows Attackers to Execute Remote Code
Microsoft patched CVE-2026-69485, an 8.8 CVSS RCE flaw in the Windows Remote Desktop Client affecting Windows 10/11 and Server 2016-2025.
58
Windows BitLocker Vulnerability Allows Attackers to Execute Malicious Code Remotely
Microsoft patched CVE-2026-69449, a heap-based buffer overflow in Windows BitLocker enabling code execution, affecting Windows 10/11 and Server 2012-2025 in September 2026 updates.
50
Microsoft Plugs Nearly 1,000 Security Holes
Microsoft's September Patch Tuesday fixes a record 974 flaws, including two actively exploited Windows zero-days and critical DNS and Windows Shell bugs.
84
Patch Tuesday - September 2026
Microsoft's September 2026 Patch Tuesday fixes 999 CVEs, a record, with two zero-day privilege escalation flaws already exploited in the wild.
88
2026-007: Critical Vulnerability in Windows Netlogon
Actively exploited CVSS 9.8 Windows Netlogon flaw lets unauthenticated attackers execute code with SYSTEM privileges on domain controllers.
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Critical RCE flaw in Windows IKE Extension now actively exploited
CISA warns CVE-2026-33824, a critical unprivileged RCE in Windows IKE Extension, is now actively exploited.
88
Related CVEs
by mentions- CVE-2026-81963<1%7.8Local Privilege Escalation via Link Following in Windows Update Stack
- CVE-2026-85880<1%7.8Heap-Based Buffer Overflow in Windows ALPC Enables Local Privilege Escalation
- CVE-2026-3382477%9.8Unauthenticated Double-Free RCE in Microsoft Windows IKE Extension
- CVE-2026-697301%9.8Use-After-Free RCE in Windows DNS Server
- CVE-2026-62895<1%8.8Permissive Cross-Domain Policy Privilege Elevation in Microsoft Azure Arc
- CVE-2026-83941<1%8.8Missing Authorization in Microsoft Entra ID Enables Privilege Escalation
- Untrusted pointer dereference in Windows Kernel (network privesc)
- CVE-2026-81349<1%7.2OS Command Injection Privilege Elevation in Microsoft Azure HDInsights
- CVE-2026-5065611%7.0Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet "
- CVE-2026-77909<1%6.5Insufficiently Protected Credentials in Microsoft Azure CycleCloud
Appears with
- Microsoftvendor · 16
- Windows 11product · 9
- Microsoftorganization · 8
- Windows 10product · 7
- Always On VPNproduct · 3
- Windowsproduct · 3
- Exchange Serverproduct · 2
- Googlevendor · 2
- SSTPproduct · 2
- IKEv2product · 2
- Entra IDproduct · 2
- Windows Deployment Servicesproduct · 1
- BleepingComputerorganization · 1
- Office 2021product · 1
- Kasperskyvendor · 1
- Microsoft Edgeproduct · 1
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