What’s Vulnerable › Vulnerabilities
CVE-2026-58277: Microsoft SharePoint Elevation of Privilege Vulnerability
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-14 · updated 2026-10-28
- Weakness: CWE-285
Description
Improper authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Affected products
- Microsoft SharePoint Server: 2016, 2019
- Microsoft Sharepoint Enterprise Server 2016: from 16.0.0 before 16.0.5561.1001 — fixed in 16.0.5561.1001
- Microsoft SharePoint Server: from 16.0.0 before 16.0.10417.20175 — fixed in 16.0.10417.20175
How to fix
Upgrade to a fixed version: Microsoft Sharepoint Enterprise Server 2016 16.0.5561.1001; Microsoft SharePoint Server 16.0.10417.20175. Check the vendor advisory for mitigations.
References
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