CVE-2021-31838

CVE-2021-31838 is a critical command injection vulnerability affecting McAfee MVISION EDR prior to version 3.4.0. An authenticated administrator can leverage the 'execute reaction' EDR functionality to execute arbitrary PowerShell commands on client systems. With a CVSS score of 9.1 (CRITICAL), this vulnerability poses a significant risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.