CVE-2026-102856: Microsoft Office Visio Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft Office Visio 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 environments are in scope for triage?
Prioritize systems running Microsoft 365 Apps for Enterprise or Microsoft Office LTSC 2021 or 2024, in either 32-bit or 64-bit editions.
What does exploitation require from an attacker?
The attacker does not require prior privileges, and the attack can be delivered over a network. User interaction is required for exploitation.