CVE-2022-32471 Race condition in n/a

High 7.0 Published 15 Feb 2023 Updated 5 May 2025

Attackers can exploit a race condition in InsydeH2O firmware to modify SMRAM or OS, leading to privilege escalation or data corruption.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2022-32471?

CVE-2022-32471 is a high-severity vulnerability in Insyde Insydeh2o, published on 15 Feb 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. The IhisiDxe driver uses the command buffer to pass input and output data. By modifying the command buffer contents with DMA after the input parameters have been checked but before they are used, the IHISI SMM code may be convinced to modify SMRAM or OS, leading to possible data corruption or escalation of privileges.

Weakness: CWE-367

Which versions are affected by CVE-2022-32471?

It affects 1 product.

Products include Insyde Insydeh2o.

How do I fix CVE-2022-32471?

No fix has been published for CVE-2022-32471 yet. Limit exposure of the affected software until one is available.

Is CVE-2022-32471 being exploited?

There is no known exploitation of CVE-2022-32471 in the wild and no public exploit code.

All Insyde Insydeh2o vulnerabilities

Sources

Also known as GHSA-4mc9-qpvm-p7p4.