CVE-2021-42320 Microsoft SharePoint Server Spoofing Vulnerability
Attackers can spoof content in Microsoft SharePoint Server, potentially misleading users or bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-42320?
CVE-2021-42320 is a high-severity vulnerability in Microsoft Sharepoint Enterprise Server, published on 15 Dec 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Microsoft SharePoint Server Spoofing Vulnerability
Weakness: CWE-290
Which versions are affected by CVE-2021-42320?
It affects 2 products.
Products include Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Server.
How do I fix CVE-2021-42320?
No fix has been published for CVE-2021-42320 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-42320 being exploited?
There is no known exploitation of CVE-2021-42320 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Sharepoint Enterprise Server
- CVE-2019-0604 Microsoft SharePoint Remote Code Execution
- CVE-2023-24955 Microsoft SharePoint Server Code Injection
- CVE-2025-49706 Microsoft SharePoint Improper Authentication
- CVE-2020-1210 Microsoft SharePoint Remote Code Execution Vulnerability
- CVE-2020-1595 Microsoft SharePoint Remote Code Execution Vulnerability
Sources
Also known as GHSA-7f8g-xqpj-293g.