On-Premesis SharePoint Vulnerability

Written by Align | 2025

We want to inform you about a recently disclosed security vulnerability, CVE-2025-53770, which affects on-premises SharePoint Server deployments. This vulnerability is currently being actively exploited and poses a significant risk to unpatched systems of users with on-premises SharePoint Server deployments.

Please note that Align IT Suite customers leverage SharePoint Online (Microsoft 365), and this on-premises vulnerability does not apply.

Impact Summary

Affected Products: Microsoft SharePoint Server Subscription Edition, SharePoint Server 2019, and SharePoint Server 2016.
Unaffected Products: SharePoint Online (Microsoft 365) is not impacted by this vulnerability.

Recommended Action

Microsoft has released security updates to fully address CVE-2025-53770. We strongly advise all clients using on-premises SharePoint Server to apply the latest July 2025 security updates immediately.

Additional Resources

For detailed remediation steps and download links for the relevant updates, please refer to Microsoft’s official guidance here: Customer Guidance for CVE-2025-53770

If you have any questions, don't hesitate to reach out to Align's Help Desk at 855-482-5446 or email help@align.com.

Thank you,

Align Managed Services

help@align.com

www.align.com

www.align.com/support

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