Code Injection in Microsoft Exchange Server - CVE-2021-28480
Published: April 13, 2021 / Updated: October 7, 2024
Vulnerability identifier: #VU52138
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-28480
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation in the Microsoft Exchange Server. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Microsoft Exchange Server
How to mitigate CVE-2021-28480
Install updates from vendor's website.
Microsoft Exchange Server - addressed in versions 2013 Cumulative Update 23 Apr21SU 15.00.1497.015, 2016 Cumulative Update 19 Apr21SU 15.01.2176.012, 2016 Cumulative Update 20 Apr21SU 15.01.2242.008, 2019 Cumulative Update 8 Apr21SU 15.02.0792.013, 2019 Cumulative Update 9 Apr21SU 15.02.0858.010