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Vulnerabilities

Vulnerability · CVE-2023-24955

Microsoft SharePoint Server Code Injection Vulnerability

Published May 9, 2023 · catalog updated Jun 16, 2026 · Microsoft SharePoint

Patch now

CVE-2023-24955 is in the CISA known-exploited catalog, due Apr 16, 2024. Confirm Microsoft SharePoint against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.2
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
84.97%
Remediation
Remediation guidance
Affected products
cpe microsoft/sharepoint enterprise server · cpe microsoft/sharepoint server · vendor Microsoft SharePoint · vendor Microsoft SharePoint Server

Microsoft SharePoint Server contains a code injection vulnerability that allows an authenticated attacker with Site Owner privileges to execute code remotely.

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 server2019
  • vendor Microsoft SharePointversion unspecified
  • vendor Microsoft SharePoint Serverversion unspecified

How to fix CVE-2023-24955

What to do

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

Should you patch?

CVE-2023-24955 is in the CISA known-exploited catalog, due Apr 16, 2024. Confirm Microsoft SharePoint against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/sharepoint enterprise server 2016; microsoft/sharepoint server 2019. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-94: Code Injection. EPSS 84.97%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

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. May 9, 2023 · Catalog

    Detected

    Microsoft SharePoint Server contains a code injection vulnerability that allows an authenticated attacker with Site Owner privileges to execute code remotely.

  2. Mar 26, 2024 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  3. Apr 16, 2024 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

  4. Jun 16, 2026 · Catalog

    Updated

    Microsoft SharePoint Server contains a code injection vulnerability that allows an authenticated attacker with Site Owner privileges to execute code remotely.

Sources

  • CISA KEVConfirmed exploitationCVE-2023-24955

    Microsoft SharePoint Server contains a code injection vulnerability that allows an authenticated attacker with Site Owner privileges to execute code remotely.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2023-24955

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2023-24955

    30-day exploitation probability 85.0%

    first.org
  • Metasploit ModulesPublic exploit moduleexploit_windows/http/sharepoint_dynamic_proxy_generator_auth_bypass_rce

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2023-24955

    Microsoft SharePoint Server Remote Code Execution Vulnerability

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2023-24955

    Microsoft SharePoint Server contains a code injection vulnerability that allows an authenticated attacker with Site Owner privileges to execute code remotely.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.