What is the CVSS score of CVE-2021-21557?

CVE-2021-21557 has a CVSS 3.1 base score of 6.7 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.3%.

Is there a patch available for CVE-2021-21557?

Yes, a patch is available for CVE-2021-21557. Update the affected software to the latest version immediately.

Poweredge R640 Firmware CVE-2021-21557

MEDIUM

Improper Input Validation (CWE-20)

2021-06-14 security_alert@emc.com

Dell RCE Denial Of Service Information Disclosure Poweredge R640 Firmware Poweredge R740 Firmware Poweredge R740Xd Firmware Poweredge R940 Firmware Poweredge R540 Firmware Poweredge R440 Firmware Poweredge T440 Firmware Poweredge Xr2 Firmware Poweredge R740Xd2 Firmware Poweredge R840 Firmware Poweredge R940Xa Firmware Poweredge T640 Firmware Poweredge C6420 Firmware Poweredge Fc640 Firmware Poweredge M640 Firmware Poweredge M640P Firmware Poweredge Mx740C Firmware Poweredge Mx840C Firmware Poweredge C4140 Firmware Poweredge T140 Firmware Poweredge T340 Firmware Poweredge R240 Firmware Poweredge R340 Firmware Poweredge R6415 Firmware Poweredge R7415 Firmware Poweredge R7425 Firmware Poweredge R6515 Firmware Poweredge R7515 Firmware Poweredge R6525 Firmware Poweredge R7525 Firmware Poweredge C6525 Firmware

6.7

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.7 MEDIUM

AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Jun 14, 2021 - 19:15 nvd

MEDIUM 6.7

DescriptionNVD

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.

AnalysisAI

Dell PowerEdge Server BIOS and select Dell Precision Rack BIOS contain an out-of-bounds array access vulnerability. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity.

Technical ContextAI

This vulnerability is classified under CWE-20. 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. Affected products include: Dell Poweredge R640 Firmware, Dell Poweredge R740 Firmware, Dell Poweredge R740Xd Firmware, Dell Poweredge R940 Firmware, Dell Poweredge R540 Firmware.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.