CVE-2026-69629: 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 16.0.14334.20906 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5569.1002Patch KB5002919 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.20976 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20207 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.20326.20138
Event History
Frequently Asked Questions
Which Outlook deployments should be prioritized for remediation?
Prioritize Microsoft Outlook 2016, Microsoft 365 Apps for Enterprise, Office 2019, Office LTSC 2021, and Office LTSC 2024 deployments listed as affected, including both 32-bit and 64-bit editions where applicable.
Does an attacker need an account or elevated privileges to exploit this issue?
No privileges are required. The attack vector is network-based and exploitation requires user interaction.