CVE-2023-29357 CRITICAL

CVE-2023-29357: Microsoft SharePoint Server Elevation of Privilege Vulnerability

Vendor Microsoft
Product Microsoft SharePoint Server 2019
Weakness CWE-303
KEV Status Known Exploited
Ransomware Used in campaigns
Published June 13, 2023
Last update October 21, 2025

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

Microsoft SharePoint Server Elevation of Privilege Vulnerability

CISA mandated remediation

02CISA Required Action

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Key dates

03Disclosure timeline

June 13, 2023 CVE published
October 21, 2025 Record updated