7.5
High
CVE-2026-21260 Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker…
Description
Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft SharePoint Enterprise Server 2016 16.0 | 16.0.0 → < 16.0.5539.1002 | 16.0.5539.1002 |
| Microsoft SharePoint Server 2019 16.0 | 16.0.0 → < 16.0.10417.20097 | 16.0.10417.20097 |
| Microsoft Office 2019 19.0 | 19.0.0 → latest | No fix stated |
| Microsoft 365 Apps for Enterprise 16.0 | 16.0.1 → latest | No fix stated |
| Microsoft Office LTSC 2021 16.0 | 16.0.1 → latest | No fix stated |
| Microsoft SharePoint Server Subscription Edition 16.0 | 16.0.0 → < 16.0.19127.20518 | 16.0.19127.20518 |
| Microsoft Office LTSC 2024 16.0 | 16.0.0 → latest | No fix stated |
| Microsoft Outlook 2016 16.0 | 16.0.0.0 → < 16.0.5539.1002 | 16.0.5539.1002 |
References
- Microsoft Outlook Spoofing Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
Other CVEs of Microsoft SharePoint Enterprise Server 2016
The 337 CVEs of Microsoft SharePoint Enterprise Server 2016 →
CVE-2026-97783
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint…
8.1
High
CVE-2026-69943
Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows…
8.8
High
CVE-2026-62917
Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a…
4.6
Medium
CVE-2026-62839
Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing…
6.5
Medium