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CVE-2026-47294: Microsoft SharePoint Server Remote Code Execution Vulnerability

• Severity: high (CVSS 8.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-01 · updated 2026-08-10
• Weakness: CWE-78

Description

Improper neutralization of special elements used in an os command ('os command injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Affected products

• Microsoft SharePoint Server: before 16.0.19725.20280; 2016, 2019 — fixed in 16.0.19725.20280
• Microsoft SharePoint Server Subscription Edition: from 16.0.0 before 16.0.19725.20280 — fixed in 16.0.19725.20280
• Microsoft Sharepoint Enterprise Server 2016: from 16.0.0 before 16.0.5552.1002 — fixed in 16.0.5552.1002
• Microsoft SharePoint Server: from 16.0.0 before 16.0.10417.20128 — fixed in 16.0.10417.20128

How to fix

Upgrade to a fixed version: Microsoft SharePoint Server 16.0.19725.20280; Microsoft SharePoint Server Subscription Edition 16.0.19725.20280; Microsoft Sharepoint Enterprise Server 2016 16.0.5552.1002; Microsoft SharePoint Server 16.0.10417.20128. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47294

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