CVE-2026-97765: 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 https://aka.ms/OfficeSecurityReleases - 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
Event History
Frequently Asked Questions
Does an attacker need an account or other privileges to exploit this issue?
No. The vulnerability is rated PR:N, indicating that no privileges are required before exploitation.
Is user interaction required for exploitation?
Yes. The CVSS vector specifies UI:R, so exploitation requires user interaction.
Which Office deployments are listed as affected?
The affected software list includes Microsoft 365 Apps for Enterprise, Office LTSC 2021 and 2024 for 32-bit and 64-bit editions, Office LTSC for Mac 2021 and 2024, and Office Online Server.