CVE-2026-97004: 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 16.0.14334.20974 - 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 16.0.10417.20228Patch KB5002928 - 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 must an attacker do to exploit this issue?
The attack vector is network-based and requires no privileges, but user interaction is required. The available data does not specify the exact interaction or delivery mechanism.
Which deployments should be assessed?
Assess Microsoft 365 Apps for Enterprise, Microsoft Office Excel, Office LTSC 2021 and 2024 editions identified in the advisory data, Office LTSC for Mac 2021, Microsoft Office 365 for Mac, and Microsoft Office Online Server. Both 32-bit and 64-bit Office LTSC 2021 editions are listed.
What is the potential impact if exploitation succeeds?
Successful exploitation can allow code execution. The severity vector indicates high impact to confidentiality, integrity, and availability.