Dell BIOS contains an improper input validation vulnerability.

published 2022-01-24 4 y ago modified 2026-10-07 32 d ago also EUVD-2021-22962

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

Dell BIOS contains an improper input validation vulnerability. A local authenticated malicious user may potentially exploit this vulnerability by using an SMI to gain arbitrary code execution in SMRAM.

Patch / fix

fixed in 1

Dell CPG BIOS 1.14

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 32 d ago (2026-10-07)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	6.4	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.2	AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

Dell CPG BIOS

Classification

Weakness

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-20 Improper Input Validation

References

dell.com /support/kbdoc/en-us/000193321/dsa-2021-240
vendor-advisory

Sources

CVE List CVE-2021-36342
NVD CVE-2021-36342

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Summary