CVE-2021-34522 Microsoft Defender Remote Code Execution Vulnerability
An attacker can execute arbitrary code via the Microsoft Malware Protection Engine, requiring immediate patching to prevent system compromise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-34522?
CVE-2021-34522 is a high-severity code injection vulnerability in Microsoft Malware Protection Engine, published on 14 Jul 2021. 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
Microsoft Defender Remote Code Execution Vulnerability
Which versions are affected by CVE-2021-34522?
It affects 1 product.
Products include Microsoft Malware Protection Engine.
How do I fix CVE-2021-34522?
No fix has been published for CVE-2021-34522 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-2021-34522 being exploited?
There is no known exploitation of CVE-2021-34522 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Malware Protection Engine
Sources
Also known as GHSA-6x55-2hvm-xqpr.