CVE-2021-34517: Microsoft SharePoint Server Spoofing Vulnerability
Microsoft SharePoint Server Spoofing Vulnerability
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.5363.1000Patch KB5001992 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5188.1000Patch KB5001976 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10376.20001Patch KB5001975 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.5363.1000Patch KB5001984
Event History
Frequently Asked Questions
What is CVE-2021-34517?
CVE-2021-34517 is a spoofing vulnerability in Microsoft SharePoint Server.
Which versions of Microsoft SharePoint Server are affected by CVE-2021-34517?
CVE-2021-34517 affects Microsoft SharePoint Foundation 2013 SP1, Microsoft SharePoint Server 2013 SP1, Microsoft SharePoint Server 2016, and Microsoft SharePoint Server 2019.
What is the severity of CVE-2021-34517?
CVE-2021-34517 has a severity rating of 5.3, which is considered medium.
How can I fix CVE-2021-34517?
To fix CVE-2021-34517, apply the security updates provided by Microsoft.
Where can I find more information about CVE-2021-34517?
You can find more information about CVE-2021-34517 on the Microsoft Security Guidance Advisory for CVE-2021-34517.