What’s Vulnerable › Vulnerabilities
CVE-2024-55567
- 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: 2025-06-12 · updated 2026-06-17
- Weakness: CWE-20
Description
Improper input validation was discovered in UsbCoreDxe in Insyde InsydeH2O kernel 5.4 before 05.47.01, 5.5 before 05.55.01, 5.6 before 05.62.01, and 5.7 before 05.71.01. The SMM module has an SMM call out vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary code at SMM level.
Affected products
- Insydeh2O: from 5.4 before 5.4.05.47.01; from 5.5 before 5.5.05.55.01; from 5.6 before 5.6.05.62.01; from 5.7 before 5.7.05.71.01 — fixed in 5.4.05.47.01, 5.5.05.55.01, 5.6.05.62.01, 5.7.05.71.01
How to fix
Upgrade to a fixed version: Insydeh2O 5.4.05.47.01, 5.5.05.55.01, 5.6.05.62.01, 5.7.05.71.01. Check the vendor advisory for mitigations.
References
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