HIGH 7.5 Microsoft
CVE-2026-100208
Microsoft Office Outlook Remote Code Execution Vulnerability
Microsoft Security Update 2026-Sep: Microsoft Office Outlook Remote Code Execution Vulnerability
Affected Products
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office LTSC 2021 for 32-bit editions
- Microsoft Office LTSC 2021 for 64-bit editions
- Microsoft Office LTSC 2024 for 32-bit editions
- Microsoft Office LTSC 2024 for 64-bit editions
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-100208
- https://nvd.nist.gov/vuln/detail/CVE-2026-100208
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-09-08 via Microsoft. Affected: Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft Office LTSC 2021 for 32-bit editions and 3 more.
vulnfeed aggregates 17092 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.