Zibo Li

VMware vCenter Server contains a heap-overflow vulnerability in the implementation of the DCERPC protocol. This out-of-bounds write flaw allows a malicious actor with network access to trigger the vulnerability by sending a specially crafted network packet, potentially leading to remote code execution. The vulnerability is actively being exploited in the wild, and CISA has added it to its Known Exploited Vulnerabilities Catalog. Successful exploitation can enable broad takeover and lateral movement across an organization’s virtual infrastructure. The vulnerability is rated with a CVSS score of 9.8, indicating critical severity.

The issue is a heap-overflow vulnerability in the implementation of the DCERPC protocol within VMware vCenter Server. A malicious actor with network access can trigger this by sending a specially crafted network packet, potentially leading to remote code execution. The vulnerability is due to improper memory handling during the processing of DCERPC protocol requests. The DCERPC protocol is a remote procedure call mechanism used for communication between different components of the vCenter Server. Exploitation allows an unauthenticated attacker to execute arbitrary code on the server.