What’s Vulnerable › Vulnerabilities

CVE-2022-34325

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-11-14 · updated 2026-06-17
• Weakness: CWE-367

Description

DMA transactions which are targeted at input buffers used for the StorageSecurityCommandDxe software SMI handler could cause SMRAM corruption through a TOCTOU attack. DMA transactions which are targeted at input buffers used for the software SMI handler used by the StorageSecurityCommandDxe driver could cause SMRAM corruption. This issue was discovered by Insyde engineering based on the general description provided by

Affected products

• Insydeh2O: from 5.3 before 05.36.23; from 5.2 before 05.27.23; from 5.4 before 05.44.23; from 5.5 before 05.52.23 — fixed in 05.27.23, 05.36.23, 05.44.23, 05.52.23

How to fix

Upgrade to a fixed version: Insydeh2O 05.27.23, 05.36.23, 05.44.23, 05.52.23. Check the vendor advisory for mitigations.

References

• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/SA-2022057
• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/SA-2022057

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