Advisoriesby IbisMicrosoftCVE-2026-81401
Microsoft Office Excel: type confusion
Fix: upgrade to 16.0.20326.20138 or later (6 fixed versions below)
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft 365 Apps for Enterprise Product | >= 16.0.1, < 16.0.20326.20138 | 16.0.20326.20138 |
| Microsoft Excel 2016 Product | >= 16.0.0.0, < 16.0.5569.1003 | 16.0.5569.1003 |
| Microsoft Office 2016 Product | >= 16.0.0, < 16.0.5569.1003 | 16.0.5569.1003 |
| Microsoft Office 2019 Product | >= 19.0.0, < 16.0.10417.20207 | 16.0.10417.20207 |
| Microsoft Office 365 for Mac Product | >= 1.0.0, < 16.113.26091433 | 16.113.26091433 |
| Microsoft Office LTSC 2021 Product | >= 16.0.1, < 16.0.14334.20906 | 16.0.14334.20906 |
| Microsoft Office LTSC 2024 Product | >= 16.0.0, < 16.0.17932.20976 | 16.0.17932.20976 |
| Microsoft Office LTSC for Mac 2021 Product | >= 16.0.1, < 16.113.26091433 | 16.113.26091433 |
| Microsoft Office LTSC for Mac 2024 Product | >= 16.0.0, < 16.113.26091433 | 16.113.26091433 |
| Office Online Server Product | >= 16.0.0.0, < 16.0.10417.20207 | 16.0.10417.20207 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-843