CVE-2020-17141 Microsoft Exchange Remote Code Execution Vulnerability

High 8.4 Published Updated

Attackers can execute arbitrary code on Microsoft Exchange Server, requiring immediate patching by system administrators.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2020-17141?

CVE-2020-17141 is a high-severity code injection vulnerability in Microsoft Exchange Server, published on 9 Dec 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Microsoft Exchange Remote Code Execution Vulnerability

Which versions are affected by CVE-2020-17141?

It affects 1 product.

Products include Microsoft Exchange Server.

How do I fix CVE-2020-17141?

No fix has been published for CVE-2020-17141 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-2020-17141 being exploited?

There is no known exploitation of CVE-2020-17141 in the wild and no public exploit code.

All Microsoft Exchange Server vulnerabilities

Sources

Also known as GHSA-5rwf-4w32-44c4.

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