CVE-2026-63514: Microsoft SharePoint Server Remote Code Execution Vulnerability

Published Aug 11, 2026
·
Updated

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

Other sources

Microsoft SharePoint Server Remote Code Execution Vulnerability

— Microsoft

Affected Software

3 affected componentsFixes available
Microsoft SharePoint Server Subscription Edition<16.0.19725.20522
16.0.19725.20522
Microsoft SharePoint Server 2019<16.0.10417.20198
16.0.10417.20198
Microsoft SharePoint Enterprise Server 2016<16.0.5565.1001
16.0.5565.1001

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.0.19725.20522Patch KB5002893
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.0.10417.20198Patch KB5002896
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.0.5565.1001Patch KB5002906

Event History

Aug 11, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:03 PM
Data Sourced
via MITRE·05:03 PM
DescriptionSeverity
Data Sourced
via NVD·05:18 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the severity of CVE-2026-63514?

CVE-2026-63514 has a severity rating of 8.8, categorized as high.

2

What systems are affected by CVE-2026-63514?

CVE-2026-63514 affects Microsoft SharePoint Server Subscription Edition, Microsoft SharePoint Server 2019, and Microsoft SharePoint Enterprise Server 2016.

3

How do I fix CVE-2026-63514?

To fix CVE-2026-63514, apply the latest security updates provided by Microsoft for the affected SharePoint versions.

4

What type of vulnerability is CVE-2026-63514?

CVE-2026-63514 is a remote code execution vulnerability caused by the deserialization of untrusted data.

5

Who can exploit CVE-2026-63514?

An authorized attacker with network access can exploit CVE-2026-63514 to execute code.

Company

Resources

Contact

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CVE-2026-63514 - Microsoft SharePoint Server Remote Code Execution Vulnerability - SecAlerts