VulnTideExploited vulnerabilities, by vendor. Data as of .
Not in CISA KEVReported exploited: VulnCheck KEV since Published CVSS 8.8 highEPSS 55.8% probability of exploitation in 30 days
Microsoft

CVE-2023-21742: Microsoft SharePoint Server Remote Code Execution Vulnerability

Is it exploited?

Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .

VulnCheck KEV lists it since . It cites 1 public report, the first from .

How likely is exploitation in the next 30 days?
55.8%

EPSS score, percentile 99 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?
8.8 High

CVSS v3.1 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

  • from 16.0.0 to before 16.0.5378.1000
  • from 15.0.0 to before 15.0.5519.1000
  • from 16.0.0 to before 16.0.10394.20021
  • from 16.0.0 to before 16.0.15601.20418
  • from 15.0.0 to before 15.0.5519.1000

Versions by product

Source: CISA KEV 2026.10.29, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

Microsoft SharePoint Server Remote Code Execution Vulnerability

Source: CVE List, as of . About the data.

What to do

Advisories and patches

This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Versions by product, as listed in the CVE record (5 products)
Microsoft Microsoft SharePoint Enterprise Server 2016
StatusVersions
Affectedfrom 16.0.0 to before 16.0.5378.1000
Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1
StatusVersions
Affectedfrom 15.0.0 to before 15.0.5519.1000
Microsoft Microsoft SharePoint Server 2019
StatusVersions
Affectedfrom 16.0.0 to before 16.0.10394.20021
Microsoft Microsoft SharePoint Server Subscription Edition
StatusVersions
Affectedfrom 16.0.0 to before 16.0.15601.20418
Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1
StatusVersions
Affectedfrom 15.0.0 to before 15.0.5519.1000

Source: CVE List, as of . About the data.

Weakness

CWE-284

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

DateEvent
CVE record published
CVE record last updated

Known exploited Microsoft vulnerabilities

  • CVE-2026-96951: Microsoft Windows Command Injection Vulnerability (added )
  • CVE-2026-65660: Microsoft SharePoint Code Injection Vulnerability (added )
  • CVE-2026-81963: Microsoft Windows Link Following Vulnerability (added )
  • CVE-2026-85880: Microsoft Windows Heap-Based Buffer Overflow Vulnerability (added )
  • CVE-2019-1068: Microsoft SQL Server Remote Code Execution Vulnerability (added )