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Critical 9.8Known exploited (CISA KEV)Published Jun 13, 2023
CVE-2023-29357Microsoft SharePoint Server Elevation of Privilege Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft SharePoint Server 2019 and 1 other product. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Jan 10, 2024; federal agencies had to remediate by Jan 31, 2024, and it is known to be used in ransomware. Treat that date as your deadline.
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Microsoft SharePoint Server Elevation of Privilege Vulnerability
- CVSS
- 9.8 CRITICAL (v3.1, CNA)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)
- CWE-303
- Known exploited
- Added to CISA KEV Jan 10, 2024; federal remediation due Jan 31, 2024; known ransomware useApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 99.98% (percentile 100)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Microsoft SharePoint Server 2019 microsoft:sharepoint_server_2019 (from the name) | from 16.0.0 before 16.0.10399.20005 | CNA record |
microsoft sharepoint_server microsoft:sharepoint_server | 2019 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29357vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-29357us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.