What is CVE-2021-21556?

CVE-2021-21556 is a medium-severity vulnerability in Dell Poweredge Bios Intel 15g, classified under Stack-based Buffer Overflow. CVSS score: 6.1/10. Published 2021-06-14.

How severe is CVE-2021-21556?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Buffer overflow in Dell Poweredge Bios Intel 15g

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…

Vulnerability class: Buffer Overflow

EPSS: 0.003 (22.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:L.

Affected products

Dell Poweredge Bios Intel 15g — versions unspecified
Dell Poweredge_mx740c
Dell Poweredge_mx740c_firmware
Dell Poweredge_mx840c
Dell Poweredge_mx840c_firmware
Dell Poweredge_r640
Dell Poweredge_r640_firmware
Dell Poweredge_r740
Dell Poweredge_r740_firmware
Dell Poweredge_r740xd

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow
CWE-787 — Out-of-bounds Write

References

security_alert@emc.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21556?: CVE-2021-21556 is a medium-severity vulnerability in Dell Poweredge Bios Intel 15g, classified under Stack-based Buffer Overflow. CVSS score: 6.1/10. Published 2021-06-14.
How severe is CVE-2021-21556?: Medium severity. CVSS v3 base score is 6.1 out of 10.