CVE-2026-65656: Microsoft Office Remote Code Execution Vulnerability
Improper neutralization of special elements used in a command ('command injection') in Microsoft Office allows an unauthorized attacker to execute code locally.
Other sources
Microsoft Office 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 https://aka.ms/OfficeSecurityReleases
Event History
Frequently Asked Questions
What is the severity of CVE-2026-65656?
CVE-2026-65656 has a high severity rating of 7.8.
What is CVE-2026-65656?
CVE-2026-65656 is a Microsoft Office Remote Code Execution Vulnerability due to improper neutralization of special elements used in a command.
Who is affected by CVE-2026-65656?
CVE-2026-65656 affects users of Microsoft 365 Apps for Enterprise, Microsoft Office 2019, 2021, 2024, and LTSC editions.
How do I fix CVE-2026-65656?
To fix CVE-2026-65656, ensure that you have applied the latest security updates for your Microsoft Office applications.
What could an attacker achieve with CVE-2026-65656?
An attacker exploiting CVE-2026-65656 could execute unauthorized code locally on the affected Microsoft Office applications.