CVE-2021-21556

Name of the Vulnerable Software and Affected Versions Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and T640 Server BIOS (affected versions not specified)

Description A stack-based buffer overflow vulnerability exists in systems with NVDIMM-N installed, which can be exploited by a local malicious user with high privileges. This could lead to a denial of Service, arbitrary code execution, or information disclosure in UEFI or BIOS Preboot Environment.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.