What’s Vulnerable › Vulnerabilities

CVE-2024-52879

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-15 · updated 2026-06-17
• Weakness: CWE-126

Description

An issue was discovered in Insyde InsydeH2O kernel 5.2 before version 05.29.50, kernel 5.3 before version 05.38.50, kernel 5.4 before version 05.46.50, kernel 5.5 before version 05.54.50, kernel 5.6 before version 05.61.50, and kernel 5.7 before version 05.70.50. In VariableRuntimeDxe driver, SmmUpdateVariablePropertySmi () is a SMM callback function and it uses StrCmp () to compare variable names. This action may cause a buffer over-read.

Affected products

• Insydeh2O: from 5.2 before 5.2.05.29.50; from 5.3 before 5.3.05.38.50; from 5.4 before 5.4.05.46.50; from 5.5 before 5.5.05.54.50; from 5.6 before 5.6.05.61.50; from 5.7 before 5.7.05.70.50 — fixed in 5.2.05.29.50, 5.3.05.38.50, 5.4.05.46.50, 5.5.05.54.50, 5.6.05.61.50, 5.7.05.70.50

How to fix

Upgrade to a fixed version: Insydeh2O 5.2.05.29.50, 5.3.05.38.50, 5.4.05.46.50, 5.5.05.54.50. Check the vendor advisory for mitigations.

References

• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/sa-2024016/

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