CVE-2026-100212
Undergoing Analysis
Undergoing Analysis - In Progress
Use After Free in Microsoft Office Excel Allows Remote Code Execution
Vulnerability report for CVE-2026-100212, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-13
Last updated on: 2026-10-13
Assigner: Microsoft Corporation
Description
Description
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Microsoft | Microsoft | 365 Apps for Enterprise 16.0.1 |
| Microsoft | Microsoft | Office 365 for Mac 1.0.0 |
| Microsoft | Microsoft | Office LTSC 2021 16.0.1 |
| Microsoft | Microsoft | Office LTSC 2024 16.0.0 |
| Microsoft | Microsoft | Office LTSC for Mac 2021 16.0.1 |
| Microsoft | Microsoft | Office LTSC for Mac 2024 16.0.0 |
| Microsoft | Office | Online Server 16.0.0.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
