CVE-2026-56164

Microsoft SharePoint Server Elevation of Privilege Vulnerability

CVSS 5.3 medium · Microsoft Microsoft SharePoint Enterprise Server 2016 · published 2026-07-14

Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.

NVD · CVE.org

Coverage 2 sources

1. 2026-07-14 CISA Cybersecurity Advisories high CISA Adds Four Known Exploited Vulnerabilities to Catalog

   CISA added four vulnerabilities to its Known Exploited Vulnerabilities Catalog, indicating active exploitation.

2. 2026-07-14 CISA Cybersecurity Advisories high CISA Urges SharePoint Hardening After New Exploitations

   CISA warns of active exploitation of SharePoint vulnerabilities allowing unauthorized access.

3. 2026-07-15 Help Net Security high AI-driven bug hunting fuels record Microsoft Patch Tuesday

   Microsoft releases patches for over 570 vulnerabilities, including two being exploited by attackers.

Mentioned with

CVE-2026-15410 CVE-2026-32201 CVE-2026-45659 CVE-2026-50661 CVE-2026-56155

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