Description
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges over a network.
Severity (CVSS)
| Base score | 5.3 |
|---|---|
| Severity | Medium |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:F/RL:O/RC:C |
| Provided by | CNA |
Weaknesses
- CWE-306 — CWE-306: Missing Authentication for Critical Function
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 to <16.0.5561.1001 |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 to <16.0.10417.20175 |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 to <16.0.19725.20434 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56164 (vendor-advisory patch)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56164 (government-resource)
Generated from the official CVE List on 15 Jul 2026 07:06 UTC.