Microsoft Office 2021 vulnerabilities
465 published vulnerabilities in Microsoft Office 2021, 2 of them exploited in the wild. The most were published in 2026 (463), and 463 so far in 2026.
Microsoft Office 2021 vulnerabilities by year
2021
2023
2026
Most exploited Microsoft Office 2021 vulnerabilities
- CVE-2023-35311 Microsoft Outlook Security Feature Bypass
- CVE-2021-42292 Microsoft Excel Security Feature Bypass
- CVE-2026-70242 Microsoft Office Outlook Remote Code Execution Vulnerability
- CVE-2026-70291 Microsoft Office Outlook Remote Code Execution Vulnerability
- CVE-2026-70300 Microsoft Office Word Remote Code Execution Vulnerability
- CVE-2026-88156 Microsoft Office Outlook Remote Code Execution Vulnerability
- CVE-2026-88178 Microsoft Office PowerPoint Remote Code Execution Vulnerability
- CVE-2026-97016 Microsoft Office Outlook Remote Code Execution Vulnerability
- CVE-2026-97749 Microsoft Office Outlook Remote Code Execution Vulnerability
- CVE-2026-78509 Microsoft Office Outlook Remote Code Execution Vulnerability
- CVE-2026-108426 Microsoft Office Word Remote Code Execution Vulnerability
- CVE-2026-108427 Microsoft Office Word Remote Code Execution Vulnerability
Find these in your own software.
Upload an SBOM and sbomify checks it against every vulnerability here, every day.