CVE-2024-38023Network attack vector

Authenticated code execution via file parameter deserialization

Published Jul 9, 2024 · Updated Feb 10, 2026

Deserialization of untrusted data in Microsoft SharePoint Server 16.0 allows remote authenticated users to execute arbitrary code. A crafted uploaded file supplies parameters that specialized API requests cause SharePoint to deserialize without adequate trust controls. Site Owner permissions or higher are required, and successful exploitation runs code in the SharePoint Server context.

CVSS severity7.2
High
EPSS probability52.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Deserialization of untrusted data in Microsoft SharePoint Server 16.0 allows remote authenticated users to execute arbitrary code. A crafted uploaded file supplies parameters that specialized API requests cause SharePoint to deserialize without adequate trust controls. Site Owner permissions or higher are required, and successful exploitation runs code in the SharePoint Server context.

The record

CVE
CVE-2024-38023
Published
Jul 9, 2024
Updated
Feb 10, 2026
Vendor
Microsoft
Product
Microsoft SharePoint Enterprise Server 2016
Classifications
CWE-502, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.0.0 <16.0.5456.1000

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Microsoft · Microsoft SharePoint Enterprise Server 2016version=16.0.0 <16.0.5456.1000
Microsoft · Microsoft SharePoint Server 2019version=16.0.0 <16.0.10412.20001
Microsoft · Microsoft SharePoint Server Subscription Editionversion=16.0.0 <16.0.17328.20424

Published CVSS scores

7.2Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo