CVEvulnerability

CVE-2021-21555

6.7 MEDIUM Published 2021-06-14 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-06-14
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.1 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
CVSS 3.1 ([email protected])
6.7 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-122, CWE-787

Description

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 configurations

• dell poweredge r640 firmware (< 2.11.2) • dell poweredge r740 firmware (< 2.11.2) • dell poweredge r740xd firmware (< 2.11.2) • dell poweredge r940 firmware (< 2.11.2) • dell poweredge r840 firmware (< 2.11.2) • dell poweredge r940xa firmware (< 2.11.2) • dell poweredge t640 firmware (< 2.11.2) • dell poweredge mx740c firmware (< 2.11.2) • dell poweredge mx840c firmware (< 2.11.2)

Related

Weakness · CWE (2)

  • CWE-122 Heap-based Buffer Overflow weakness
  • CWE-787 Out-of-bounds Write weakness

References