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CVE-2023-24955: Microsoft SharePoint Server Remote Code Execution Vulnerability

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2024-03-26
• EPSS: 85.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-09 · updated 2026-06-17
• Weakness: CWE-94

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

Affected products

• Microsoft SharePoint Server: 2016
• Microsoft SharePoint Server: 2019
• Microsoft SharePoint Server Subscription Edition: from 16.0.0 before 16.0.16130.20420 — fixed in 16.0.16130.20420
• Microsoft Sharepoint Enterprise Server 2016: from 16.0.0 before 16.0.5395.1000 — fixed in 16.0.5395.1000
• Microsoft SharePoint Server: from 16.0.0 before 16.0.10398.20000 — fixed in 16.0.10398.20000

How to fix

Upgrade to a fixed version: Microsoft SharePoint Server Subscription Edition 16.0.16130.20420; Microsoft Sharepoint Enterprise Server 2016 16.0.5395.1000; Microsoft SharePoint Server 16.0.10398.20000. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24955
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24955
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-24955

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