CVE-2022-34412

Severity: medium (CVSS 6.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-03-16 · updated 2026-06-17
Weakness: CWE-119

Description

Dell PowerEdge BIOS and Dell Precision BIOS contain an Improper SMM communication buffer verification vulnerability. A local malicious user with high Privileges may potentially exploit this vulnerability to perform arbitrary code execution or cause denial of service.

Affected products

Dell C4130 Firmware: before 2.16.0 — fixed in 2.16.0
Dell C4140 Firmware: before 2.16.1 — fixed in 2.16.1
Dell C6320 Firmware: before 2.16.0 — fixed in 2.16.0
Dell C6420 Firmware: before 2.16.1 — fixed in 2.16.1
Dell C6520 Firmware: before 1.8.2 — fixed in 1.8.2
Dell C6525 Firmware: all versions
Dell Dss8440 Firmware: before 2.16.1 — fixed in 2.16.1
Dell Fc430 Firmware: before 2.16.0 — fixed in 2.16.0
Dell Fc630 Firmware: before 2.16.0 — fixed in 2.16.0
Dell Fc640 Firmware: before 2.16.1 — fixed in 2.16.1
Dell Fc830 Firmware: before 2.16.0 — fixed in 2.16.0
Dell M630 Firmware: before 2.16.0 — fixed in 2.16.0
Dell M630P Firmware: before 2.16.0 — fixed in 2.16.0
Dell M640 Firmware: before 2.16.1 — fixed in 2.16.1
Dell M640P Firmware: before 2.16.1 — fixed in 2.16.1
Dell M830 Firmware: before 2.16.0 — fixed in 2.16.0
Dell M830P Firmware: before 2.16.0 — fixed in 2.16.0
Dell Mx740C Firmware: before 2.16.1 — fixed in 2.16.1
Dell Mx750C Firmware: before 1.8.2 — fixed in 1.8.2
Dell Mx840C Firmware: before 2.16.1 — fixed in 2.16.1
Dell Nx3230 Firmware: before 2.16.0 — fixed in 2.16.0
Dell Nx3240 Firmware: before 2.16.1 — fixed in 2.16.1
Dell Nx3330 Firmware: before 2.16.0 — fixed in 2.16.0
Dell Nx3340 Firmware: before 2.16.1 — fixed in 2.16.1
Dell Nx430 Firmware: before 2.16.0 — fixed in 2.16.0
Dell Nx440 Firmware: before 2.11.1 — fixed in 2.11.1
Dell R230 Firmware: before 2.16.0 — fixed in 2.16.0
Dell R240 Firmware: before 2.11.1 — fixed in 2.11.1
Dell R250 Firmware: before 1.4.2 — fixed in 1.4.2
Dell R330 Firmware: before 2.16.0 — fixed in 2.16.0

How to fix

Upgrade to a fixed version: Dell C4130 Firmware 2.16.0; Dell C4140 Firmware 2.16.1; Dell C6320 Firmware 2.16.0; Dell C6420 Firmware 2.16.1; Dell C6520 Firmware 1.8.2; Dell Dss8440 Firmware 2.16.1; Dell Fc430 Firmware 2.16.0; Dell Fc630 Firmware 2.16.0; Dell Fc640 Firmware 2.16.1; Dell Fc830 Firmware 2.16.0; Dell M630 Firmware 2.16.0; Dell M630P Firmware 2.16.0. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2022-34412 or the next vulnerability affects your stack