High 7.2Known exploited (CISA KEV)Published May 9, 2023

CVE-2023-24955Microsoft SharePoint Server Remote Code Execution Vulnerability

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

Does this affect you?

It affects Microsoft SharePoint Enterprise Server 2016 and 4 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Mar 26, 2024; federal agencies had to remediate by Apr 16, 2024, and it is known to be used in ransomware. Treat that date as your deadline.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Microsoft SharePoint Enterprise Server 2016

Exploited in the last 30 days

Microsoft SharePoint Server Remote Code Execution Vulnerability

CVSS: 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Weakness (CWE): CWE-94
Known exploited: Added to CISA KEV Mar 26, 2024; federal remediation due Apr 16, 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): 84.97% (percentile 100)
Assigned by: microsoft
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Microsoft Microsoft SharePoint Enterprise Server 2016 microsoft:sharepoint_enterprise_server_2016 (from the name)	from 16.0.0 before 16.0.5395.1000	CNA record
Microsoft Microsoft SharePoint Server 2019 microsoft:sharepoint_server_2019 (from the name)	from 16.0.0 before 16.0.10398.20000	CNA record
Microsoft Microsoft SharePoint Server Subscription Edition microsoft:sharepoint_server_subscription_edition (from the name)	from 16.0.0 before 16.0.16130.20420	CNA record
microsoft sharepoint_enterprise_server microsoft:sharepoint_enterprise_server	2016	NVD
microsoft sharepoint_server microsoft:sharepoint_server	all versions; 2019	NVD

References

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-24955	vendor-advisory, patch
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-24955	us-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.