Microsoft SharePoint Deserialization of Untrusted Data Vulnerability

概要

参考情報

• msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963 · Vendor Advisory
• cisa.gov/known-exploited-vulnerabilities-catalog · US Government Resource
• CISA KEV · CVE-2026-20963

sharepoint server のその他の脆弱性

• CVE-2026-108452高 8.8Improper limitation of a pathname to a restricted directory ('path traversal') in Microsoft Office SharePoint allows an authorized attacker …
• CVE-2026-88164高 8.8Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
• CVE-2026-97783中 6.1Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized a…
• CVE-2026-97755高 8.8Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
• CVE-2026-96044高 8.8No cwe for this issue in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.