CVE-2026-97776: Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Other sources
Microsoft Office Excel 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 16.0.10417.20228Patch KB5002928 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.14334.20974 - 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
Event History
Frequently Asked Questions
Which Microsoft Office deployments are listed as affected?
The affected software list includes Microsoft 365 Apps for Enterprise; Office Online Server; Office LTSC 2021 for 64-bit editions; Office LTSC 2024 for 32-bit and 64-bit editions; Office LTSC for Mac 2021 and 2024; and Microsoft Office 365 for Mac.
Does an attacker need credentials or user interaction to exploit this issue?
The vulnerability is described as exploitable by an unauthorized attacker over a network, and the CVSS vector indicates no privileges are required. The vector also indicates that user interaction is required.