CVE-2025-54897

Microsoft SharePoint Remote Code Execution Vulnerability

CVE-2025-54897 is fixed in 3 products on 1 platform, first by KB5002778, released September 9, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

8.8

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.2175

97th percentile

<p>Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.</p>

Where it's fixed

Product	Fix	Released
Microsoft
Microsoft SharePoint Enterprise Server 2016	KB5002778	Sep 9, 2025
Microsoft SharePoint Server 2019	KB5002775	Sep 9, 2025
Microsoft SharePoint Server Subscription Edition	KB5002784	Sep 9, 2025

Details

Published
September 9, 2025
Weakness
Deserialization of Untrusted Data
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54897

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