CVE-2020-0975Network attack vector

Content spoofing via unsanitized web requests

Published Apr 15, 2020 · Updated Aug 4, 2024

Improper request sanitization in Microsoft SharePoint products allows remote authenticated users to spoof content through crafted web requests. SharePoint's web-request handling fails to sanitize attacker-controlled request data, but Microsoft has not disclosed the affected handler, field, or output operation. A valid account and user interaction are required, and successful exploitation can alter content seen in another security context without interrupting the service.

CVSS severity5.4
Medium
EPSS probability1.63%
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

Improper request sanitization in Microsoft SharePoint products allows remote authenticated users to spoof content through crafted web requests. SharePoint's web-request handling fails to sanitize attacker-controlled request data, but Microsoft has not disclosed the affected handler, field, or output operation. A valid account and user interaction are required, and successful exploitation can alter content seen in another security context without interrupting the service.

The record

CVE
CVE-2020-0975
Published
Apr 15, 2020
Updated
Aug 4, 2024
Vendor
Microsoft
Product
Microsoft SharePoint Server
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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=2019

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft SharePoint Serverversion=2019
Microsoft · Microsoft SharePoint Foundationversion=2010 Service Pack 2; version=2013 Service Pack 1
Microsoft · Microsoft SharePoint Enterprise Serverversion=2016

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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