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Monday, May 18, 2026

2 CRITICAL7 WARNING13 storiesin𝕏
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RISK_LEVEL: 🟠 MEDIUM

Make sure your team knows the web app fallback for every core M365 service. Teams, Outlook, SharePoint — browser versions for all of them. Brief your L1s before the next outage, not during it.

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☁️ M365/AZURE2 items
CRITICAL☁️ M365/Azure

Microsoft 365 Global Outage: Exchange & Teams Down Monday Morning

Microsoft experienced service disruption affecting Teams and Exchange Online, leaving users globally unable to access collaboration and communication tools. Company determined a "recent change" caused the issue and began reverting it around 7 a.m. EST.

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WARNING☁️ M365/Azure

Classic Outlook Crashes When Teams Meeting Add-in Enabled

Users with Classic Outlook and Teams Meeting Add-in enabled are impacted by previous build versions; Microsoft recommends ensuring latest Outlook version is enabled to mitigate impact. Workaround: disable Teams Meeting Add-in or perform Online Repair of Office/update Outlook to latest version.

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🔐 SECURITY4 items
CRITICAL🔐 Security

CVE-2026-42897: Microsoft Exchange XSS Active Exploitation Confirmed

Microsoft confirmed active exploitation of CVE-2026-42897, a Cross-Site Scripting vulnerability in Microsoft Exchange Server with CVSS 8.1. CISA KEV Catalog lists this as known exploited; immediate patching required for exposed Exchange servers.

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WARNING🔐 Security

Microsoft May 2026 Patch Tuesday: 130 CVEs Including 30 Critical Vulnerabilities

Microsoft addressed 130 vulnerabilities in May 2026 update, including 30 critical vulnerabilities and no publicly disclosed zero-days for first time since June 2024. CVE-2026-41089: Windows Netlogon RCE (CVSS 9.8) allows unauthenticated remote attackers to execute code via stack-based buffer overflow with no user interaction required.

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WARNING🔐 Security

CVE-2026-41103: Microsoft SSO Plugin RCE Critical Flaw Exploited

CVE-2026-41103 affects Microsoft Single-Sign-On (SSO) Plugin for Jira & Confluence with CVSS 9.1 and critical severity, assessed as "Exploitation More Likely." Unauthorized attackers can exploit via crafted login response to sign in with forged identity and bypass Microsoft Entra ID authentication.

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WARNING🔐 Security

Ivanti EPMM Remote Code Execution: Requires Admin Access to Trigger

Ivanti Endpoint Manager Mobile (EPMM) contains improper input validation allowing remotely authenticated user with administrative access to achieve remote code execution. Workaround: restrict User-ID Authentication Portal access to trusted zones or disable if not required.

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🔥 NETWORKING3 items
WARNING🔥 Networking

Fortinet Publishes 11 Advisories May 16: Two Critical Code Execution Flaws

Fortinet published 11 advisories on Patch Tuesday with two critical-severity code execution security defects. Applies to FortiOS and related appliances; review Fortinet PSIRT advisories for affected versions and recommended firmware updates.

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WARNING🔥 Networking

SonicWall SMA1000 SQL Injection CVE-2026-4112 Patches Released

SonicWall patched four vulnerabilities in SMA1000 firewalls including high-severity SQL injection CVE-2026-4112, allowing read-only admin to obtain primary admin rights. Other flaws enable credential enumeration and TOTP bypass; no evidence of wild exploitation but immediate patching urged.

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WARNING🔥 Networking

Palo Alto Networks CVE-2026-0234: Cortex XSOAR Teams Integration Cryptographic Flaw

CVE-2026-0234 is critical improper cryptographic signature verification in Cortex XSOAR/XSIAM Teams integration, allowing attackers to access and tamper with protected resources. Update Cortex platforms to patched versions immediately.

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📡 INDUSTRY4 items
INFO📡 Industry

NinjaOne Reaches $5B Valuation; Gartner Leader & Formula 1 Partnership

NinjaOne valued at $5 billion with $500M+ annual recurring revenue; Q1 2026 included Gartner Leader quadrant entry for Endpoint Management, Audi Formula 1 partnership, and two new product launches. Platform integrates endpoint, patch, remote access, backup, MDM, asset and vulnerability management natively on single architecture.

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INFO📡 Industry

RMM Market 2026: NinjaOne, ConnectWise, Datto Lead; Architectural Divergence

Kaseya holds 25.9% RMM market share built via acquisition (Datto for $6.2B, Unitrends, IT Glue); ConnectWise at 25.4% followed similar playbook. NinjaOne built natively on single cloud-native architecture; all capabilities share same data model and console, creating operational consistency competitors lack.

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INFO📡 Industry

2026 RMM Pricing Models Shift: Per-Tech vs Per-Endpoint vs Tiered

Enterprise RMM solutions like ConnectWise Automate incur $2,000-$20,000+ implementation costs; platforms like NinjaOne and Atera offer free onboarding. Atera pioneered per-technician pricing model ($129-249/month); per-endpoint and tiered models remain standard for Datto, ConnectWise, Kaseya with custom quotes.

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INFO📡 Industry

ConnectWise Launches Modern Threat Protection with 15-Min SLA Guarantee

ConnectWise launched unified AI-powered threat protection enabling MSPs to reduce tool sprawl and accelerate response with industry-first 15-minute Service Level Agreement (SLA). New solution addresses MSP security visibility and coordination gaps.

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Friday, May 15, 2026
Tuesday, May 19, 2026
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