CVE-2023-33132: Microsoft SharePoint Server Spoofing Vulnerability

Severity: medium (CVSS 6.3 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: 2023-06-13 · updated 2026-06-17
Weakness: CWE-79

Description

Microsoft SharePoint Server Spoofing Vulnerability

Affected products

Microsoft SharePoint Server: 2019
Microsoft SharePoint Server Subscription Edition: from 16.0.0 before 16.0.16130.20548 — fixed in 16.0.16130.20548
Microsoft SharePoint Server: from 16.0.0 before 16.0.10399.20005 — fixed in 16.0.10399.20005

How to fix

Upgrade to a fixed version: Microsoft SharePoint Server Subscription Edition 16.0.16130.20548; Microsoft SharePoint Server 16.0.10399.20005. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33132
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33132

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