CVE-2023-29357
Microsoft SharePoint Server Elevation of Privilege Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 10 Jan 2024
- Used in ransomware campaigns
Description
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Key facts
- Published
- 13 Jun 2023
- Last changed
- 21 Oct 2025
- Assigned by
- microsoft
- KEV added
- 10 Jan 2024
- KEV fix due
- 31 Jan 2024
- Used in ransomware
- Yes, according to CISA
- EPSS
- 99.984% likely to be exploited in the next 30 days, higher than 99.983% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom the CNA (microsoft)
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 to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft SharePoint Server 2019 |
|
Timeline
- 13 Jun 2023 Published
- 10 Jan 2024 CVE-2023-29357 added to CISA KEV
- 10 Jan 2024 Added to the CISA KEV catalogue