CVE-2026-97016: Microsoft Office Outlook Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft Office Outlook Remote Code Execution Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.21056 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20974
Event History
Frequently Asked Questions
Which Outlook deployments are identified as affected?
The affected software list includes Microsoft 365 Apps for Enterprise and Microsoft Office LTSC 2021 and 2024, in both 32-bit and 64-bit editions where listed.
Does exploitation require an authenticated account or user interaction?
No. The supplied CVSS vector indicates network attack access with low attack complexity, no privileges required, and no user interaction required.
What impact could successful exploitation have?
Successful exploitation can allow remote code execution. The supplied severity vector rates confidentiality, integrity, and availability impact as high.