CVE-2020-16950 Microsoft SharePoint Information Disclosure Vulnerability
An attacker with local access can exploit improper memory handling in SharePoint Server to disclose sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-16950?
CVE-2020-16950 is a medium-severity vulnerability in Microsoft Sharepoint Server, published on 16 Oct 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
<p>An information disclosure vulnerability exists when Microsoft SharePoint Server fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system.</p> <p>To exploit the vulnerability, an attacker would have to log on to an affected system and run a specially crafted application.</p> <p>The security update addresses the vulnerability by correcting how Microsoft SharePoint Server handles objects in memory.</p>
Which versions are affected by CVE-2020-16950?
It affects 1 product.
Products include Microsoft Sharepoint Server.
How do I fix CVE-2020-16950?
No fix has been published for CVE-2020-16950 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-16950 being exploited?
There is no known exploitation of CVE-2020-16950 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sharepoint Server
- CVE-2026-50522 Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
- CVE-2026-58644 Microsoft SharePoint Deserialization of Untrusted Data
- CVE-2026-20963 Microsoft SharePoint Deserialization of Untrusted Data
- CVE-2025-53770 Microsoft SharePoint Deserialization of Untrusted Data
- CVE-2023-29357 Microsoft SharePoint Server Privilege Escalation
Sources
Also known as GHSA-c3x8-3wh2-r4f2.