CVE-2022-34421 Memory corruption in PowerEdge Platform

High 7.5 Published 16 Mar 2023 Updated 26 Feb 2025

A local attacker with high privileges can exploit improper SMM buffer verification in Dell BIOS to execute arbitrary code or cause denial of service.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-34421?

CVE-2022-34421 is a high-severity memory corruption vulnerability in Dell PowerEdge Platform, published on 16 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-119

Which versions are affected by CVE-2022-34421?

It affects 80 products.

Products include Dell C4130 Firmware, Dell C4140 Firmware, Dell C6320 Firmware, Dell C6420 Firmware, Dell C6520 Firmware, Dell C6525 Firmware and 74 more.

How do I fix CVE-2022-34421?

No fix has been published for CVE-2022-34421 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-34421 being exploited?

There is no known exploitation of CVE-2022-34421 in the wild and no public exploit code.

Sources

Also known as GHSA-33j9-x55f-349p.