Vulnerability in Microsoft Sharepoint Server 2019
CVE-2023-29357
Microsoft SharePoint Server Elevation of Privilege Vulnerability
EPSS: 0.944 (100.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). 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.
Affected products
- Microsoft Sharepoint Server 2019 — versions 16.0.0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
- Chocapikk/CVE-2023-29357
- LuemmelSec/CVE-2023-29357
- Guillaume-Risch/cve-2023-29357-Sharepoint
- KeyStrOke95/CVE-2023-29357-ExE
- DonVorrin/CVE-2023-29357
- DeividasTerechovas/SOC227-Microsoft-SharePoint-Server-Elevation-of-Privilege-Possible-CVE-2023-29357-Exploitation
- AhmedMansour93/Event-ID-189-Rule-Name-SOC227-CVE-2023-29357
- rapid7/metasploit-framework
- EfstratiosLontzetidis/blogs_
- GhostTroops/TOP
References
- Microsoft SharePoint Server Elevation of Privilege Vulnerability (vendor-advisory)
Frequently asked questions
- What is CVE-2023-29357?
- CVE-2023-29357 is a critical-severity vulnerability in Microsoft Sharepoint Server 2019, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 9.8/10. Published 2023-06-13.
- How severe is CVE-2023-29357?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2023-29357 known to be exploited?
- Yes. CVE-2023-29357 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-01-10), indicating it is being actively exploited. 33 public proof-of-concept repositories are indexed.