CVE-2023-29357
Microsoft SharePoint Server Privilege Escalation Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run SharePoint Server, fix it now.
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
US federal civilian agencies must remediate by Jan 31, 2024.
Patch status
Official fix available since
Apply the vendor's update to every affected system. Check the fixed-in versions below where known.
Basis: NVD patch reference
Description
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
Affected products
| Product | Vendor | Affected versions | Source |
|---|---|---|---|
| SharePoint Server | Microsoft | 2019 | KEV |
Sources: KEV = CISA Known Exploited Vulnerabilities catalog.
Intelligence timeline
Developments from the last 30 days, newest first.
- CVSS scoredUpdateKEV
CVE-2023-29357 scored CVSS 9.8: Microsoft SharePoint Server, Microsoft SharePoint Server Privilege Escalation Vulnerability
CISA lists this as exploited in the wild and known to be used in ransomware campaigns. Unpatched SharePoint Server systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
- Patch releasedUpdateKEV
Patch released for CVE-2023-29357: Microsoft SharePoint Server, Microsoft SharePoint Server Privilege Escalation Vulnerability
An official fix is now available for Microsoft SharePoint Server. This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference
1 earlier event is available with a subscription. See plans.
Coverage
We have not published a story about this vulnerability yet.