CVE-2026-45659
Microsoft SharePoint Remote Code Execution Vulnerability
CVSS Score
8.8
EPSS Score
2.8%
EPSS Percentile
85th
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
| Vendor | microsoft |
| Product | microsoft sharepoint enterprise server 2016 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | May 22, 2026 |
| Last Updated | Jul 2, 2026 |
⚠️ Actively Exploited — Act Now
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CVSS v3 Breakdown
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 Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Microsoft SharePoint Enterprise Server 2016
16.0.0 < 16.0.5552.1002
Microsoft / Microsoft SharePoint Server 2019
16.0.0 < 16.0.10417.20128
Microsoft / Microsoft SharePoint Server Subscription Edition
16.0.0 < 16.0.19725.20280