CVE-2025-53771

Microsoft SharePoint Server Spoofing Vulnerability

Description

Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 11.50% Top 10%
Vendor Advisory microsoft.com
Affected: Microsoft Microsoft SharePoint Enterprise Server 2016
Affected: Microsoft Microsoft SharePoint Server 2019
Affected: Microsoft Microsoft SharePoint Server Subscription Edition
Published at:
Updated at:

References

Link Tags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53771 vendor advisory
https://www.bleepingcomputer.com/news/microsoft/microsoft-sharepoint-zero-day-exploited-in-rce-attacks-no-patch-available/ press/media coverage

Frequently Asked Questions

What is the severity of CVE-2025-53771?
CVE-2025-53771 has been scored as a medium severity vulnerability.
How to fix CVE-2025-53771?
To fix CVE-2025-53771, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-53771 being actively exploited in the wild?
It is possible that CVE-2025-53771 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~12% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-53771?
CVE-2025-53771 affects Microsoft Microsoft SharePoint Enterprise Server 2016, Microsoft Microsoft SharePoint Server 2019, Microsoft Microsoft SharePoint Server Subscription Edition.
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