MicrosoftCVE-2026-70105
Microsoft Office Word: improper input validation
Medium6.5CVE-2026-70105 · Published Aug 20, 2026 · updated Sep 4, 2026
Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Microsoft 365 Apps for Enterprise Product | >= 16.0.1, < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft Office 2019 Product | >= 19.0.0, < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft Office 365 for Mac Product | >= 1.0.0, < 16.112.26081010 | 16.112.26081010 |
| Microsoft Office LTSC 2021 Product | >= 16.0.1, < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft Office LTSC 2024 Product | >= 16.0.0, < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| Microsoft Office LTSC for Mac 2021 Product | >= 16.0.1, < 16.112.26081010 | 16.112.26081010 |
| Microsoft Office LTSC for Mac 2024 Product | >= 16.0.0, < 16.112.26081010 | 16.112.26081010 |
| Microsoft Word 2016 Product | >= 16.0.1, < 16.0.5565.1000 | 16.0.5565.1000 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/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-20
More Microsoft advisories
All Microsoft| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 20 | Microsoft Copilot in Azure: server-side request forgery | High7.7 | No fix yet |
| Aug 20 | Microsoft Azure Stack HCI: unauthorized attacker could disclose information over | High8.6 | No fix yet |
| Aug 20 | Microsoft Azure Virtual Machines: server-side request forgery | High8.5 | No fix yet |
| Aug 20 | Microsoft Azure ARC: improper authorization | Critical10.0 | No fix yet |
| Aug 20 | Microsoft Partner Center: insecure direct object reference | High8.6 | No fix yet |
| Aug 20 | Microsoft Entra: unsafe deserialization | Critical10.0 | No fix yet |