7.8
High
CVE-2026-20949 Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature locally
Description
Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature 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 LTSC for Mac 2021 16.0 | 16.0.1 → < 16.105.26011018 | 16.105.26011018 |
| 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 2024 16.0 | 16.0.0 → < 16.105.26011018 | 16.105.26011018 |
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