CVE-2026-97754: 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 https://aka.ms/OfficeSecurityReleases - 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 16.0.14334.20974 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20228Patch KB5002928
Event History
Frequently Asked Questions
Does exploitation require an attacker to authenticate or obtain prior access?
No. The vulnerability is rated PR:N, indicating no privileges are required, but it is rated UI:R, so user interaction is required.
Which Office deployments are listed as affected?
Affected products include Microsoft 365 Apps for Enterprise; Microsoft Office LTSC 2024 for 32-bit and 64-bit editions; Microsoft Office LTSC 2021 for 32-bit and 64-bit editions; Microsoft Office 365 for Mac; and Microsoft Office LTSC for Mac 2021 and 2024.
What is the potential security impact if exploitation succeeds?
The supplied severity vector rates confidentiality, integrity, and availability impact as High. Successful exploitation can therefore affect data confidentiality, modification of data, and availability.