VDB
CVE-2026-78506
CVE-2026-78506
PUBLISHED
CVSS 5.5 MEDIUM
Reported by microsoft · Published September 8, 2026
Improper null termination in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Risk Scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 |
| Microsoft | Microsoft Office 2019 | 19.0.0 |
| Microsoft | Microsoft Office 365 for Mac | - |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 |
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0 |
| Microsoft | Microsoft Office LTSC for Mac 2021 | - |
| Microsoft | Microsoft Office LTSC for Mac 2024 | - |
| Microsoft | Microsoft Word 2016 | 16.0.1 |
| Microsoft | Microsoft Office LTSC for Mac 2021 | - |
| Microsoft | Microsoft Office 365 for Mac | - |
| microsoft | 365_apps | 16.0.1 |
| microsoft | office_macos_2024 | - |
| microsoft | office_macos_2021 | - |
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0 |
| Microsoft | Microsoft Office LTSC for Mac 2024 | - |
| microsoft | office_2021 | 16.0.1 |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 |
| microsoft | office_2024 | 16.0.0 |
| Microsoft | Microsoft Office 2019 | 19.0.0 |
| microsoft | office_2019 | 19.0.0 |
…and 4 more
Timeline
- Sep 8, 2026 Coalition ESS Score
- Sep 8, 2026 CVE Published
- Sep 8, 2026 CVE Updated
- Sep 9, 2026 Security Advisory
References
- Microsoft Office Word Information Disclosure Vulnerability vendor-advisorypatch