7.2

CVE-2021-21555

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.

Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Dell ≫ Poweredge R640 Firmware Version < 2.11.2
   Dell ≫ Poweredge R640 Version-
Dell ≫ Poweredge R740 Firmware Version < 2.11.2
   Dell ≫ Poweredge R740 Version-
Dell ≫ Poweredge R740xd Firmware Version < 2.11.2
   Dell ≫ Poweredge R740xd Version-
Dell ≫ Poweredge R940 Firmware Version < 2.11.2
   Dell ≫ Poweredge R940 Version-
Dell ≫ Poweredge R840 Firmware Version < 2.11.2
   Dell ≫ Poweredge R840 Version-
Dell ≫ Poweredge R940xa Firmware Version < 2.11.2
   Dell ≫ Poweredge R940xa Version-
Dell ≫ Poweredge T640 Firmware Version < 2.11.2
   Dell ≫ Poweredge T640 Version-
Dell ≫ Poweredge Mx740c Firmware Version < 2.11.2
   Dell ≫ Poweredge Mx740c Version-
Dell ≫ Poweredge Mx840c Firmware Version < 2.11.2
   Dell ≫ Poweredge Mx840c Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.323
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.7 0.8 5.9
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 7.2 3.9 10
AV:L/AC:L/Au:N/C:C/I:C/A:C
security_alert@emc.com 6.1 0.6 5.5
CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.