Vulnerability Monitor

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CVE-2021-21556

Dell PowerEdge R640, R740, R740XD, R840, R940, R940xa, MX740c, MX840c, and T640 Server BIOS contain a stack-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.

Published

2021-06-14T19:15:08.353

Last Modified

2024-11-21T05:48:35.470

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.1 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

3.9

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-121
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System dell poweredge_r640_firmware < 2.11.2 Yes
Hardware dell poweredge_r640 - No
Operating System dell poweredge_r740_firmware < 2.11.2 Yes
Hardware dell poweredge_r740 - No
Operating System dell poweredge_r740xd_firmware < 2.11.2 Yes
Hardware dell poweredge_r740xd - No
Operating System dell poweredge_r940_firmware < 2.11.2 Yes
Hardware dell poweredge_r940 - No
Operating System dell poweredge_r840_firmware < 2.11.2 Yes
Hardware dell poweredge_r840 - No
Operating System dell poweredge_r940xa_firmware < 2.11.2 Yes
Hardware dell poweredge_r940xa - No
Operating System dell poweredge_t640_firmware < 2.11.2 Yes
Hardware dell poweredge_t640 - No
Operating System dell poweredge_mx740c_firmware < 2.11.2 Yes
Hardware dell poweredge_mx740c - No
Operating System dell poweredge_mx840c_firmware < 2.11.2 Yes
Hardware dell poweredge_mx840c - No
References