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CVE-2026-66805

Microsoft SharePoint Server Remote Code Execution Vulnerability

CVSS 3.1 8.8 HIGHCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-66805

Published

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

Read the publisher's advisory

Affected versions, risk and source history

Related advisories and sources

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-66805 · CVE overview and exploitation status

cve-program · CVE-2026-66805

Related changes

Linked by CVE identifier
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An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 14 Nov 11:24 UTC · 273 of 275 readable · 269 fully read · documentation 469/469 current

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