5.3Medium
Microsoft Sharepoint Foundation
CVE-2021-34517
Microsoft SharePoint Server Spoofing Vulnerability
What this means for your business
- It affects Microsoft Sharepoint Foundation. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Microsoft Sharepoint Foundation, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
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Scoring
- CVSS
- 5.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Assigned by
- secure@microsoft.com
Dates
- Published
- 2021-07-14
- Last modified
- 2026-08-10
- Sources
- NVD
Affected products
- Microsoft Sharepoint Foundation2013
- Microsoft Sharepoint Server2013, 2016, 2019
As listed in the NVD configuration data. Not a statement about your estate.