high7.8
CVE-2026-40359
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Impact
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | 365 Apps | All versions |
| Microsoft | Excel | Version 2016 |
| Microsoft | Office | Version 2019 |
| Microsoft | Office Long Term Servicing Channel | Versions 2021, 2024 |
| Microsoft | Office Online Server | before 16.0.10417.20128 |