CVE-2026-63514
Received Received - Intake

Deserialization Flaw in Microsoft Office SharePoint Permits Remote Code Execution

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: Microsoft Corporation

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

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-63514
EUVD
EUVD-2026-56295

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft office_sharepoint *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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Executive Summary

This vulnerability involves deserialization of untrusted data in Microsoft Office SharePoint. An authorized attacker can exploit this to execute arbitrary code remotely over a network.

Impact Analysis

An attacker could gain control of SharePoint servers, steal sensitive data, install malware, or disrupt services. Systems with internet-facing SharePoint instances are most at risk.

Mitigation Strategies

Apply the latest security updates from Microsoft for SharePoint as soon as possible to patch the deserialization flaw. Monitor Microsoft's official security advisories for patches and follow their recommended mitigation steps.

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