vulnerability
Microsoft SharePoint: CVE-2026-20959: Microsoft SharePoint Server Spoofing Vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:M/Au:S/C:P/I:P/A:N) | Jan 13, 2026 | Jan 13, 2026 | Apr 13, 2026 |
Severity
5
CVSS
(AV:N/AC:M/Au:S/C:P/I:P/A:N)
Published
Jan 13, 2026
Added
Jan 13, 2026
Modified
Apr 13, 2026
Description
Microsoft SharePoint: CVE-2026-20959: Microsoft SharePoint Server Spoofing Vulnerability
Solutions
microsoft-sharepoint-sharepoint_2016-upgrade_latestmicrosoft-sharepoint-sharepoint_2019-upgrade_latestmicrosoft-sharepoint-sharepoint_subscription_edition-upgrade_latest
References
- https://support.microsoft.com/help/5002828
- https://support.microsoft.com/help/5002825
- https://support.microsoft.com/help/5002822
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20959
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-2101
- CVE-2026-20959
- https://attackerkb.com/topics/CVE-2026-20959
- CWE-79
- EUVD-EUVD-2026-2101
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.