CVE-2023-21742highobserved exploitationCWE-284

CVE-2023-21742: high-severity vulnerability in Microsoft SharePoint Enterprise Server 2013…

Microsoft SharePoint Server Remote Code Execution Vulnerability

Published · Updated

Follow this CVE+ Monitor Microsoft SharePoint Server+ Monitor Microsoft SharePoint Enterprise Server

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

75Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.

ssvc Actcvss 8.8epss 56%
from disclosure to weapon87 days
Published on NVDJan 10
1st PoC+87d
VulnCheck+344d
Microsoft SharePoint Server Remote Code Execution Vulnerability
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Microsoft SharePoint Enterprise Server 2013 Service Pack 1Microsoft · Microsoft SharePoint Enterprise Server 2016Microsoft · Microsoft SharePoint Foundation 2013 Service Pack 1Microsoft · Microsoft SharePoint Server 2019Microsoft · Microsoft SharePoint Server Subscription Edition
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Microsoft SharePoint Enterprise Server 2013…

In the same product, most dangerous first.

CVE-2025-53770CRITICALMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 100.0%KEVCVE-2025-49704HIGHMicrosoft SharePoint Remote Code Execution VulnerabilityEPSS 100.0%KEVCVE-2025-49706MEDIUMMicrosoft SharePoint Server Spoofing VulnerabilityEPSS 99.1%KEVCVE-2023-24955HIGHMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 85.0%KEVCVE-2026-45659HIGHMicrosoft SharePoint Remote Code Execution VulnerabilityEPSS 80.2%KEVCVE-2026-55040CRITICALMicrosoft SharePoint Server Security Feature Bypass VulnerabilityEPSS 69.5%KEV