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Medium severity · published Jan 24, 2022
CVE-2021-36343
Dell BIOS contains an improper input validation vulnerability
6.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CB
CPG BIOS · Dell
before 1.14 · source: vendor
P5
Precision 5820 Tower Firmware · Dell
before 2.12.1; before 2.12.1 · source: NVD
P7
Precision 7510 Firmware · Dell
before 1.24.3 · source: NVD
P7
Precision 7520 Firmware · Dell
before 1.22.0 · source: NVD
P7
Precision 7530 Firmware · Dell
before 1.18.2 · source: NVD
P7
Precision 7540 Firmware · Dell
before 1.15.1 · source: NVD
P7
Precision 7550 Firmware · Dell
before 1.10.1 · source: NVD
P7
Precision 7560 Firmware · Dell
before 1.5.0 · source: NVD
P7
Precision 7710 Firmware · Dell
before 1.24.3 · source: NVD
P7
Precision 7720 Firmware · Dell
before 1.22.0 · source: NVD
P7
Precision 7730 Firmware · Dell
before 1.18.2 · source: NVD
P7
Precision 7740 Firmware · Dell
before 1.15.1 · source: NVD
Affected product
CB
CPG BIOS
Dell
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-36343
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-36343
x_refsource_MISC
https://www.dell.com/support/kbdoc/en-us/000193321/dsa-2021-240
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