CVE-2023-33165: Microsoft SharePoint Server Security Feature Bypass Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-11 · updated 2026-06-17
Weakness: CWE-200

Description

Microsoft SharePoint Server Security Feature Bypass Vulnerability

Affected products

Microsoft SharePoint Server: 2019
Microsoft SharePoint Server Subscription Edition: from 16.0.0 before 16.0.16130.20642 — fixed in 16.0.16130.20642
Microsoft SharePoint Server: from 16.0.0 before 16.0.10400.20008 — fixed in 16.0.10400.20008

How to fix

Upgrade to a fixed version: Microsoft SharePoint Server Subscription Edition 16.0.16130.20642; Microsoft SharePoint Server 16.0.10400.20008. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33165
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33165

Get alerted when CVE-2023-33165 or the next vulnerability affects your stack