CVE-2020-1069 Microsoft SharePoint Server Remote Code Execution Vulnerability

High 8.8 Published 21 May 2020 Updated 19 Aug 2026

An authenticated attacker can execute arbitrary code in the SharePoint application pool context by exploiting unsafe ASP.Net web controls.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-1069?

CVE-2020-1069 is a high-severity code injection vulnerability in Microsoft Sharepoint Enterprise Server, published on 21 May 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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.

Weakness: CWE-476

Which versions are affected by CVE-2020-1069?

It affects 3 products.

Products include Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.

How do I fix CVE-2020-1069?

No fix has been published for CVE-2020-1069 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2020-1069 being exploited?

There is no known exploitation of CVE-2020-1069 in the wild and no public exploit code.

All Microsoft Sharepoint Enterprise Server vulnerabilities

Sources

Also known as GHSA-hgfm-gjhm-cx48.