M365 Change Tracker

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Microsoft 365 Apps — changes & security (25)

Roadmap, security and documentation changes captured for Microsoft 365 Apps.

ModerateExploitedCloud + on-premMicrosoft Office LTSCMicrosoft 365 Apps

Microsoft Outlook Spoofing Vulnerability

⏰ Remediate by Nov 24, 2026 · in 12d

Spoofing · Moderate · CVSS 6.5 · Exploited in the wild. Affects: Microsoft Office LTSC, Microsoft 365 Apps.

CriticalCloud + on-prem×8 recordsMicrosoft Office LTSC for MacMicrosoft Office 365 for MacMicrosoft Office LTSC

Microsoft Office PowerPoint Remote Code Execution Vulnerability

Remote Code Execution · Critical · CVSS 9.8. Affects: Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac, Microsoft Office LTSC, Microsoft 365 Apps.

CriticalCloud + on-premMicrosoft Office 365 for MacMicrosoft Office LTSC for MacMicrosoft Office LTSC

Microsoft Excel Remote Code Execution Vulnerability

Remote Code Execution · Critical · CVSS 8.8. Affects: Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac, Microsoft Office LTSC, Microsoft 365 Apps, Office Online Server.

CriticalCloud + on-prem×104 recordsMicrosoft Office LTSCMicrosoft 365 AppsMicrosoft Office LTSC for Mac

Microsoft Office Excel Remote Code Execution Vulnerability

Remote Code Execution · Critical · CVSS 8.8. Affects: Microsoft Office LTSC, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac.

CriticalCloud + on-prem×8 recordsMicrosoft Office LTSCMicrosoft 365 AppsMicrosoft Office LTSC for Mac

Microsoft Office Remote Code Execution Vulnerability

Remote Code Execution · Critical · CVSS 8.8. Affects: Microsoft Office LTSC, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac.

ImportantCloud + on-premWindows 11 Version 26H2 for ARM64-based SystemsWindows 11 Version 26H2 for x64-based SystemsMicrosoft 365 Apps

Windows Rich Text Edit Control Remote Code Execution Vulnerability

Remote Code Execution · Important · CVSS 9.8. Affects: Windows 11 Version 26H2 for ARM64-based Systems, Windows 11 Version 26H2 for x64-based Systems, Microsoft 365 Apps, Microsoft Office LTSC, Windows 10 Version, Windows Server.

ImportantCloud + on-prem×4 recordsMicrosoft Office LTSC for MacMicrosoft Office 365 for MacMicrosoft Office LTSC

Microsoft Word Remote Code Execution Vulnerability

Remote Code Execution · Important · CVSS 8.8. Affects: Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac, Microsoft Office LTSC, Microsoft 365 Apps.

ImportantCloud + on-prem×2 recordsMicrosoft Office LTSC for MacMicrosoft Office 365 for MacMicrosoft Office LTSC

Microsoft Office Excel Elevation of Privilege Vulnerability

Elevation of Privilege · Important · CVSS 8.8. Affects: Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac, Microsoft Office LTSC, Microsoft 365 Apps, Office Online Server.

ImportantCloud + on-prem×2 recordsMicrosoft Office LTSCMicrosoft 365 AppsMicrosoft Office LTSC for Mac

Microsoft Office Word Security Feature Bypass Vulnerability

Security Feature Bypass · Important · CVSS 7.8. Affects: Microsoft Office LTSC, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac.

ImportantCloud + on-premMicrosoft Office LTSCMicrosoft 365 AppsMicrosoft Office LTSC for Mac

Microsoft Office Word Elevation of Privilege Vulnerability

Elevation of Privilege · Important · CVSS 7.8. Affects: Microsoft Office LTSC, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac.

ImportantCloud + on-premMicrosoft Office LTSCMicrosoft 365 AppsMicrosoft Office LTSC for Mac

Microsoft Office OneNote Elevation of Privilege Vulnerability

Elevation of Privilege · Important · CVSS 7.8. Affects: Microsoft Office LTSC, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac.

ImportantCloud + on-prem×2 recordsMicrosoft Office 365 for MacMicrosoft 365 AppsMicrosoft Office LTSC for Mac

Microsoft Office Outlook Information Disclosure Vulnerability

Information Disclosure · Important · CVSS 7.5. Affects: Microsoft Office 365 for Mac, Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office LTSC.

ImportantCloud + on-prem×16 recordsMicrosoft Office LTSC for MacMicrosoft Office 365 for MacMicrosoft Office LTSC

Microsoft Office Word Information Disclosure Vulnerability

Information Disclosure · Important · CVSS 6.5. Affects: Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac, Microsoft Office LTSC, Microsoft 365 Apps.

ImportantCloud + on-prem×27 recordsMicrosoft 365 AppsMicrosoft Office LTSC for MacMicrosoft Office 365 for Mac

Microsoft Office Excel Information Disclosure Vulnerability

Information Disclosure · Important · CVSS 6.5. Affects: Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office 365 for Mac.

ImportantCloud + on-prem×9 recordsMicrosoft 365 AppsMicrosoft Office LTSC for MacMicrosoft Office LTSC

Microsoft Office PowerPoint Information Disclosure Vulnerability

Information Disclosure · Important · CVSS 6.5. Affects: Microsoft 365 Apps, Microsoft Office LTSC for Mac, Microsoft Office LTSC, Microsoft Office 365 for Mac.