CVE-2024-26198: Microsoft Exchange Server Remote Code Execution Vulnerability

Overview

Severity

High (CVSS 8.8)

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2024-Mar

Released

2024-03-12

Last Updated

2024-04-23

EPSS Score

2.93% (percentile: 86.4%)

FAQ

How could an attacker exploit this vulnerability? An unauthenticated attacker could exploit the vulnerability by placing a specially crafted file onto an online directory or in a local network location then convincing the user to open it. In a successful attack, this will then load a malicious DLL which could lead to a remote code execution. According to the CVSS metric, the attack vector is network (AV:N) and the user interaction is required (UI:R). What is the target context of the remote code execution? This attack requires a specially crafted file to be placed either in an online directory or in a local network location. When a victim runs this file, it loads the malicious DLL.

Affected Products (3)

Server Software

• Microsoft Exchange Server 2019 Cumulative Update 14
• Microsoft Exchange Server 2019 Cumulative Update 13
• Microsoft Exchange Server 2016 Cumulative Update 23

Security Updates (2)

• 5037224
• 5037224

Acknowledgments

kap0k

Revision History

• 2024-03-12: Information published.
• 2024-04-23: Microsoft is announcing the release of a new version of the Microsoft Exchange Server updates to address all known issues that were identified in the March 2024 Security Updates. Microsoft strongly recommends installing these new updates to address the vulnerability identified by CVE-2024-26198.