CVE-2026-55052
HIGH
8.8
CVSS 3.1
Metadata
Severity & Metrics
8.8
HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC — CISA Coordinator
Affected products (3)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | x64-based Systems | 16.0.0 < 16.0.5561.1001 |
| Microsoft | Microsoft SharePoint Server 2019 | x64-based Systems | 16.0.0 < 16.0.10417.20175 |
| Microsoft | Microsoft SharePoint Server Subscription Edition | x64-based Systems | 16.0.0 < 16.0.19725.20434 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-862 | cna | CWE-862: Missing Authorization |
CVSS scores (1)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 8.8 | HIGH | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
References (1)
- Microsoft SharePoint Elevation of Privilege Vulnerability https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55052