CVE-2026-111309: Microsoft Office Outlook Remote Code Execution Vulnerability
Published Nov 10, 2026
·Updated
Microsoft Office Outlook Remote Code Execution Vulnerability
Other sources
Release of invalid pointer or reference in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
— Microsoft
Affected Software
4 affected componentsFixes available
Microsoft Office LTSC 2021<16.0.14334.21048
16.0.14334.21048
Microsoft Office LTSC 2021<16.0.14334.21048
16.0.14334.21048
Microsoft Office LTSC 2024<16.0.17932.21140
16.0.17932.21140
Microsoft Office LTSC 2024<16.0.17932.21140
16.0.17932.21140
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 16.0.14334.21048 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.17932.21140
Event History
Nov 10, 2026
CVE Published
via Microsoft·04:00 PM
Data Sourced
via Microsoft·04:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·04:00 PM
Affected Software
CVE Published
via MITRE·06:21 PM
Data Sourced
via MITRE·06:21 PM
DescriptionSeverity
Data Sourced
via NVD·07:18 PM
DescriptionSeverityWeakness