CVE-2021-21555: Buffer Overflow
Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and T640 Server BIOS contain a heap-based buffer overflow vulnerability in systems with NVDIMM-N installed. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of Service, arbitrary code execution, or information disclosure in UEFI or BIOS Preboot Environment.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-21555?
CVE-2021-21555 is a heap-based buffer overflow vulnerability in Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and T640 Server BIOS.
Who is affected by CVE-2021-21555?
Individuals and organizations using Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, or T640 servers with NVDIMM-N installed are affected by CVE-2021-21555.
What is the severity of CVE-2021-21555?
CVE-2021-21555 has a severity rating of 6.7 (high).
How can a local malicious user exploit CVE-2021-21555?
A local malicious user with high privileges can potentially exploit CVE-2021-21555, leading to a denial of service.
Where can I find more information about CVE-2021-21555?
You can find more information about CVE-2021-21555 on the Dell support website: [link](https://www.dell.com/support/kbdoc/000187958).