Exchange Online

Microsoft 365 Admin Tool Exposes Pitfalls in Graph, Exchange PowerShell and Intune Management

An open-source developer has released version 2.0 of SwissKnife for MS Graph, a tool that adds a safe preview-and-apply layer on top of Microsoft 365 administration. The project addresses the lack of a native what-if mode in Microsoft Graph and the incomplete coverage of Exchange tasks in the Graph API. It implements a two-step plan-and-apply workflow, supports fallback to Exchange Online PowerShell or the Admin API, and runs community scripts under strict constraints. The author details multiple real-world obstacles including named-location ID drift in Conditional Access policies, masked secrets returned by Intune, and limitations when restoring Transport Rules from snapshots. The tool also provides a worker mode for macOS and Linux users and enforces script signing plus AST-based command whitelisting. Feedback is requested on error messages and tasks that still require manual PowerShell use.

Microsoft Fixes CVE-2026-96940 in Exchange Server Allowing Authenticated Mailbox Access

Microsoft has patched CVE-2026-96940, a CVSS 8.8 vulnerability in Exchange Server that lets any authenticated user read other users' mailboxes without administrative rights. The flaw exposes full message content and attachments including contracts, spreadsheets, and sensitive documents. Affected on-premises versions include Exchange Server Subscription Edition RTM, Exchange 2016 CU23, Exchange 2019 CU15, and Exchange 2019 CU14. Exchange Online users are protected because the fix was applied server-side. Microsoft rates exploitation as likely but reports no confirmed attacks in the wild at disclosure time. The issue turns a single low-privilege credential into broad access to executive, legal, and financial correspondence.