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UK Cyber Defence
VulnerabilityAnalyzed

CVE-2025-21400

Microsoft SharePoint Server Remote Code Execution Vulnerability

HIGH 8.0EPSS 34.5%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 34.5%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

CVSS 3.1
8.0 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS
34.49% probability · 98th percentile
CISA KEV
Not listed
Weakness
CWE-285
Affected
microsoft/sharepoint server
Source
secure@microsoft.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.