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Vulnerabilities

Vulnerability · CVE-2020-16952

CVE-2020-16952 is listed by A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application p…

Published Oct 16, 2020 · catalog updated Jun 17, 2026 · sharepoint enterprise server

Last checked Nov 2, 2026. A connected source was read within the last 7 days.

Check this week

CVE-2020-16952 is not in CISA KEV. FIRST estimates a 71.09% chance of exploitation in the next 30 days. Check whether you run sharepoint enterprise server.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
71.09%
Remediation
Advisory link
Affected products
cpe microsoft/sharepoint enterprise server · cpe microsoft/sharepoint foundation · cpe microsoft/sharepoint server

CVE-2020-16952 is listed by A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package..

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/sharepoint enterprise server2016
  • cpe microsoft/sharepoint foundation2013
  • cpe microsoft/sharepoint server2019

How to fix CVE-2020-16952

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    No version range is stored, so an installed version cannot be checked on this page.

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-16952 is not in CISA KEV. FIRST estimates a 71.09% chance of exploitation in the next 30 days. Check whether you run sharepoint enterprise server.

Which versions are affected?

Compare what you have installed with microsoft/sharepoint enterprise server 2016; microsoft/sharepoint foundation 2013; microsoft/sharepoint server 2019. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-346. EPSS 71.09%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Microsoft SharePoint security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 16, 2020 · Monitored products — critical

    Detected

    CVE-2020-16952 is listed by A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package..

  2. Jun 17, 2026 · Monitored products — critical

    Updated

    CVE-2020-16952 is listed by A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package..

Sources

  • CVE.orgVulnerability recordCVE-2020-16952

    Official CVE identifier

    cve.org
  • Monitored products — criticalVendor advisoryCVE-2020-16952

    A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account. Exploitation of this vulnerability requires that a user uploads a specially craft

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 2, 2026
  • Monitored products — criticalNov 1, 2026