Heap-Based Buffer Overflow in Dell PowerEdge Servers
CVE-2021-21555

6.1MEDIUM

Key Information:

Vendor

Dell
Status
Poweredge BiOS Intel 15g
Vendor
CVE Published:
14 June 2021

What is CVE-2021-21555?

Dell PowerEdge servers, specifically the R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and T640 models, contain a vulnerability in their BIOS when NVDIMM-N memory modules are installed. This issue allows a local malicious user with high-level privileges to exploit the heap-based buffer overflow. The potential consequences include denial of service, arbitrary code execution, or unauthorized information disclosure within the UEFI or BIOS Preboot Environment.

Affected Version(s)

PowerEdge BIOS Intel 15G < 2.11.2

References

https://www.dell.com/support/kbdoc/000187958
x_refsource_MISC

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.