---
id: CVE-2020-1069
title: >-
  A remote code execution vulnerability exists in Microsoft SharePoint Server
  when it fails to properly identify and filter unsafe ASP.Net web controls
summary: >-
  A remote code execution vulnerability exists in Microsoft SharePoint Server
  when it fails to properly identify and filter unsafe ASP.Net web controls. An
  authenticated attacker who successfully exploited the vulnerability could use
  a spe…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-476
vendor: microsoft
product: sharepoint_enterprise_server
affected:
  - sharepoint_enterprise_server = 2016
  - sharepoint_foundation = 2013
  - sharepoint_server = 2019
published: '2020-05-21'
updated: '2026-08-19'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2020-1069'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1069'
    label: secure@microsoft.com
  - url: 'https://nvidia.custhelp.com/app/answers/detail/a_id/5147'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1069
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.0398
epssPercentile: 0.90056
ingestedAt: '2026-08-19T17:42:36.970Z'
---

## Overview

A remote code execution vulnerability exists in Microsoft SharePoint Server when it fails to properly identify and filter unsafe ASP.Net web controls. An authenticated attacker who successfully exploited the vulnerability could use a specially crafted page to perform actions in the security context of the SharePoint application pool process.
To exploit the vulnerability, an authenticated user must create and invoke a specially crafted page on an affected version of Microsoft SharePoint Server.
The security update addresses the vulnerability by correcting how Microsoft SharePoint Server handles processing of created content.

## Affected

- `sharepoint_enterprise_server = 2016`
- `sharepoint_foundation = 2013`
- `sharepoint_server = 2019`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.