1. Home
  2. CVE Database
  3. CVE-2021-21557
HIGH · 8.1

CVE-2021-21557

Dell PowerEdge Server BIOS and select Dell Precision Rack BIOS contain an out-of-bounds array access vulnerability. A local malicious user with high privileges may potentially exploit this vulnerabili...

Vulnerability Description

Dell PowerEdge Server BIOS and select Dell Precision Rack BIOS contain an out-of-bounds array access vulnerability. 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 System Management Mode.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
LOW

Affected Products

VendorProductVersions
DellPoweredge R640 Firmware< 2.11.2
DellPoweredge R640-
DellPoweredge R740 Firmware< 2.11.2
DellPoweredge R740-
DellPoweredge R740Xd Firmware< 2.11.2
DellPoweredge R740Xd-
DellPoweredge R940 Firmware< 2.11.2
DellPoweredge R940-
DellPoweredge R540 Firmware< 2.11.2
DellPoweredge R540-
DellPoweredge R440 Firmware< 2.11.2
DellPoweredge R440-
DellPoweredge T440 Firmware< 2.11.2
DellPoweredge T440-
DellPoweredge Xr2 Firmware< 2.11.2
DellPoweredge Xr2-
DellPoweredge R740Xd2 Firmware< 2.11.2
DellPoweredge R740Xd2-
DellPoweredge R840 Firmware< 2.11.2
DellPoweredge R840-

Related Weaknesses (CWE)

CWE-20CWE-125

References

FAQ

What is CVE-2021-21557?

CVE-2021-21557 is a vulnerability with a CVSS score of 8.1 (HIGH). Dell PowerEdge Server BIOS and select Dell Precision Rack BIOS contain an out-of-bounds array access vulnerability. A local malicious user with high privileges may potentially exploit this vulnerabili...

How severe is CVE-2021-21557?

CVE-2021-21557 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-21557?

Check the references section above for vendor advisories and patch information. Affected products include: Dell Poweredge R640 Firmware, Dell Poweredge R640, Dell Poweredge R740 Firmware, Dell Poweredge R740, Dell Poweredge R740Xd Firmware.