CVE-2022-21840 Microsoft Office Remote Code Execution Vulnerability
Attackers can execute arbitrary code by exploiting a vulnerability in Microsoft Office applications, requiring user interaction to open a malicious file.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-21840?
CVE-2022-21840 is a high-severity code injection vulnerability in Microsoft Excel, published on 11 Jan 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Microsoft Office Remote Code Execution Vulnerability
Which versions are affected by CVE-2022-21840?
It affects 7 products.
Products include Microsoft Excel, Microsoft Office, Microsoft Office Long Term Servicing Channel, Microsoft Office Online Server, Microsoft Office Web Apps, Microsoft Sharepoint Enterprise Server and 1 more.
How do I fix CVE-2022-21840?
No fix has been published for CVE-2022-21840 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-2022-21840 being exploited?
There is no known exploitation of CVE-2022-21840 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Excel
Sources
Also known as GHSA-rq4v-w4c3-3h29.