CVE-2021-36343 | BDVDB-2026-168488 Detail

DellCPG BIOS

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

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

References#

https://www.dell.com/support/kbdoc/en-us/000193321/dsa-2021-240

Exploit#

No public exploit known

History#

Version 12022-01-24Record published in the CVE List.
Version 22026-10-07Most recent update recorded in the CVE List.

Published

Published: 2022-01-24
Last modified: 2026-10-07

Vendor information

Vendor: Dell
Product: CPG BIOS

All Dell vulnerabilities

Score

7.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 15.4.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 1.14
Fixed
1.14

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Metric breakdown
Attack Vector	Local
Attack Complexity	High
Privileges Required	High
User Interaction	None
Scope	Changed
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).