Microsoft Office SharePoint
CVE-2023-29357 — Microsoft SharePoint Server Elevation of Privilege Vulnerability
Executive Summary
None
Overview
9.8
CVSS CRITICAL
Critical
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
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
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 8.5
EPSS Score
0.99649
probability of exploitation in the next 30 days
0.99948 percentile - updated 2026-08-14
View on FIRST.org
Exploits & PoC
8 public PoCsUnverified third-party code
Public proof-of-concept repositories aggregated from PoC-in-GitHub. They are not reviewed and may be incomplete, non-functional, or malicious — inspect the code before running anything.
| Repository | Stars | Published | Description |
|---|---|---|---|
| Chocapikk/CVE-2023-29357 | 238 | 2023-09-26 | Microsoft SharePoint Server Elevation of Privilege Vulnerability |
| LuemmelSec/CVE-2023-29357 | 55 | 2023-09-30 | |
| Guillaume-Risch/cve-2023-29357-Sharepoint | 4 | 2023-12-22 | |
| KeyStrOke95/CVE-2023-29357-ExE | 2 | 2023-10-10 | Recreation of the SharePoint PoC for CVE-2023-29357 in C# from LuemmelSec |
| Jev1337/CVE-2023-29357-Check | 1 | 2024-01-01 | A Python script that verifies whether a target is vulnerable to CVE-2023-29357 or not |
| AhmedMansour93/Event-ID-189-Rule-Name-SOC227-CVE-2023-29357 | 0 | 2024-09-12 | Event ID 189 Rule Name SOC227 Microsoft SharePoint Server Elevation of Privilege Possible CVE-2023-29357 .. Exploitation |
| DeividasTerechovas/SOC227-Microsoft-SharePoint-Server-Elevation-of-Privilege-Possible-CVE-2023-29357-Exploitation | 0 | 2025-04-01 | |
| DonVorrin/CVE-2023-29357 | 0 | 2026-04-13 |
Detection Rules
Detection availableCommunity detection & vulnerability-scanning rules aggregated from Sigma and Nuclei templates. Validate and tune to your environment before deploying.
Nuclei templates 1
nuclei -id CVE-2023-29357
Acknowledgments
References
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