CVE-2026-97017: Microsoft Office Excel Remote Code Execution Vulnerability
Microsoft Office Excel Remote Code Execution Vulnerability
Other sources
Use after free 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 16.0.14334.20974 - 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 - 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
Which Microsoft Office deployments are listed as affected?
The listed products are Microsoft 365 Apps for Enterprise; Microsoft Office 365 for Mac; Office LTSC 2021 for 32-bit and 64-bit editions; Office LTSC 2024 for 32-bit and 64-bit editions; and Office LTSC for Mac 2021 and 2024.
Does exploitation require attacker authentication or user interaction?
The vector indicates no attacker privileges are required (PR:N), but user interaction is required (UI:R). The attack vector is network-based (AV:N) and has low attack complexity (AC:L).
What is the expected security impact if exploitation succeeds?
The supplied metrics rate confidentiality, integrity, and availability impact as high (C:H/I:H/A:H). The vulnerability is classified as a use-after-free issue.