CVE-2022-41082 is a high-severity remote code execution vulnerability affecting various versions of Microsoft Exchange Server, including 2013, 2016, and 2019. This vulnerability allows an attacker to execute arbitrary code on vulnerable systems, potentially leading to unauthorized access and control. It is crucial for organizations using affected Microsoft Exchange Server versions to apply the necessary security updates to mitigate the risk posed by this vulnerability.

How do I know if I'm affected?

If you're using Microsoft Exchange Server, you might be affected by the vulnerability. This issue impacts Exchange Server 2013 (cumulative update 23), Exchange Server 2016 (cumulative updates 22 and 23), and Exchange Server 2019 (cumulative updates 11 and 12). To know if you're affected, check if you're running one of these vulnerable versions. An attacker exploiting this vulnerability could execute arbitrary code on your server, potentially leading to unauthorized access and control. It's essential to stay informed and apply security updates when available to protect your system.

What should I do if I'm affected?

If you're affected by the CVE-2022-41082 vulnerability, it's important to take action. First, check if you're running a vulnerable version of Microsoft Exchange Server. Next, install the security updates provided by Microsoft to protect your system. Additionally, consider implementing third-party web application protection and limiting outgoing connections from your Exchange Mailbox server. Stay alert for any new advisories or patches from Microsoft and apply them when available.

Is this in CISA’s Known Exploited Vulnerabilities Catalog?

This vulnerability, also known as the Microsoft Exchange Server Remote Code Execution Vulnerability, is indeed listed in CISA's Known Exploited Vulnerabilities Catalog. It was added on September 30, 2022, with a due date of October 21, 2022. The required action for organizations is to apply updates according to vendor instructions to mitigate the risk associated with this vulnerability.

Weakness enumeration

The weakness enumeration for this vulnerability is categorized as CWE-502, which involves deserialization of untrusted data, which can lead to remote code execution on affected Microsoft Exchange Servers. Applying security updates can help mitigate this risk.

For more details

CVE-2022-41082, a high-severity remote code execution vulnerability, affects various Microsoft Exchange Server versions. To better understand its description, severity, technical details, and known affected software configurations, refer to the NVD page or the links below.

• Microsoft Exchange ProxyNotShell Remote Code Execution

• CVE-2022-41082 - Security Update Guide

• VU#915563 - Microsoft Exchange Vulnerable to SSRF and RCE

• Microsoft November 2022 Patch Tuesday Fixes 65 Vulnerabilities