CVE-2023-29357
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Microsoft SharePoint Server Elevation of Privilege Vulnerability
- Record
CVE-2023-29357- CVSS 3.1
- 9.8 Critical
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 - Weakness
- CWE-303
- Updated
- 2026-11-02
EUVDEUVD-2023-32930
Microsoft SharePoint Server Elevation of Privilege Vulnerability
- Record
EUVD-2023-32930- CVSS 3.1
- 9.8 Critical
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-m2h6-v37r-r43p
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Microsoft SharePoint Server Elevation of Privilege Vulnerability
- Record
GHSA-m2h6-v37r-r43p- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-303
- Updated
- 2026-11-02
CISA KEV No score
Microsoft SharePoint Server Privilege Escalation Vulnerability
Microsoft SharePoint Server contains an unspecified vulnerability that allows an unauthenticated attacker, who has gained access to spoofed JWT authentication tokens, to use them for executing a network attack. This attack bypasses authentication, enabling the attacker to gain administrator privileges.
- Record
CVE-2023-29357- Weakness
- CWE-303
- Updated
- 2026-11-02
NVD
Microsoft SharePoint Server Elevation of Privilege Vulnerability
- Record
CVE-2023-29357- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-303
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Metasploit | Sharepoint Dynamic Proxy Generator Unauth RCE | 2023-05-01 |
| PoC in GitHub | Chocapikk/CVE-2023-29357 | 2023-09-26 |
| PoC in GitHub | LuemmelSec/CVE-2023-29357 | 2023-09-30 |
| PoC in GitHub | KeyStrOke95/CVE-2023-29357-ExE | 2023-10-10 |
| PoC in GitHub | Guillaume-Risch/cve-2023-29357-Sharepoint | 2023-12-22 |
| PoC in GitHub | Jev1337/CVE-2023-29357-Check | 2024-01-01 |
| PoC in GitHub | AhmedMansour93/Event-ID-189-Rule-Name-SOC227-CVE-2023-29357 | 2024-09-12 |
| PoC in GitHub | DeividasTerechovas/SOC227-Microsoft-SharePoint-Server-Elevation-of-Privilege-Possible-CVE-2023-29357-Exploitation | 2025-04-01 |
| PoC in GitHub | DonVorrin/CVE-2023-29357 | 2026-04-13 |
| PoC in GitHub | Zedocun/Sharepoint-cve-2023-29357-incident-response | 2026-07-29 |
| Nuclei | Microsoft SharePoint - Authentication Bypass |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation, exploits | ||
| first indexed | CVE List, EUVD, GitHub Advisories, CISA KEV, Metasploit, Nuclei, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-29357 is a critical vulnerability (CVSS 9.8) in Microsoft Sharepoint Server, published June 13, 2023. CISA lists it as known to be exploited, since January 10, 2024. EUVD reports exploitation since January 10, 2024. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 100.0%, the 99th percentile. No source names a fixed version.