CVE-2026-97770: Microsoft Office Excel Remote Code Execution Vulnerability
Microsoft Office Excel Remote Code Execution Vulnerability
Other sources
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
— 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 16.0.17932.21056 - 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
Does exploitation require an authenticated or privileged attacker account?
No. The vector indicates network-based exploitation with no privileges required, although user interaction is required.
Which Microsoft Office products are listed as affected?
The affected software list includes Microsoft 365 Apps for Enterprise; Microsoft Office Online Server; Microsoft Office 365 for Mac; Office LTSC 2024 for 32-bit and 64-bit editions; Office LTSC 2024 for Mac; Office LTSC for Mac 2021; and Office LTSC 2021 for 32-bit editions.