7.8
High
CVE-2026-54131 Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally
Description
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft 365 Apps for Enterprise 16.0 | 16.0.1 → latest | No fix stated |
| Microsoft Office 2019 19.0 | 19.0.0 → latest | No fix stated |
| Microsoft Office 365 for Mac 1.0 | 1.0.0 → < 16.111.26071215 | 16.111.26071215 |
| Microsoft Office LTSC 2021 16.0 | 16.0.1 → latest | No fix stated |
| Microsoft Office LTSC 2024 16.0 | 16.0.0 → latest | No fix stated |
| Microsoft Office LTSC for Mac 2021 16.0 | 16.0.1 → < 16.111.26071215 | 16.111.26071215 |
| Microsoft Office LTSC for Mac 2024 16.0 | 16.0.0 → < 16.111.26071215 | 16.111.26071215 |
| Office Online Server 16.0 | 16.0.0.0 → < 16.0.10417.20175 | 16.0.10417.20175 |
References
- Microsoft Excel Remote Code Execution Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
Other CVEs of Microsoft 365 Apps for Enterprise
The 931 CVEs of Microsoft 365 Apps for Enterprise →
CVE-2026-108454
Buffer over-read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network
6.5
Medium
CVE-2026-108455
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network
6.5
Medium
CVE-2026-108453
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network
6.5
Medium
CVE-2026-108451
Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code over a network
8.8
High