Vulnerabilities of Microsoft Microsoft Office LTSC for Mac 2021

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CVE	Summary	Score	Published
CVE-2026-88178	Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network	9.8 Critical	Oct 13, 2026
CVE-2026-88156	Stack-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network	9.8 Critical	Oct 13, 2026
CVE-2026-70291	Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network	9.8 Critical	Oct 13, 2026
CVE-2026-70096	Heap-based buffer overflow in Windows Rich Text Edit Control allows an unauthorized attacker to execute code over a…	9.8 Critical	Oct 13, 2026
CVE-2026-78509	Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network	9.8 Critical	Sep 8, 2026
CVE-2025-60724	Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a…	9.8 Critical	Nov 11, 2025
CVE-2023-21716	Microsoft Word Remote Code Execution Vulnerability	9.8 Critical	Feb 14, 2023