Description
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information locally.
Metrics
CVSS 3.1 3.3/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | >= 16.0.1, < https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 2016 | >= 16.0.0, < 16.0.5561.1000 |
| Microsoft | Microsoft Office 2019 | >= 19.0.0, < https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 365 for Mac | >= 1.0.0, < 16.111.26071215 |
| Microsoft | Microsoft Office LTSC 2021 | >= 16.0.1, < https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office LTSC 2024 | >= 16.0.0, < https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office LTSC for Mac 2021 | >= 16.0.1, < 16.111.26071215 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | >= 16.0.0, < 16.111.26071215 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55139Patch, Vendor Advisory
Timeline
- Published
- Jul 14, 2026
- Last modified
- Jul 16, 2026
- NVD status
- Analyzed