An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver in UsbLegacyControlSmm leads to possible arbitrary code execution in SMM and escalation of privileges. An attacker could overwrite the function pointers in the EFI_BOOT_SERVICES table before the USB SMI handler triggers. (This is not exploitable from code running in the operating system.)
Published 2022-09-22 16:15:10
Updated 2022-09-23 19:03:54
Source MITRE
View at NVD,

Exploit prediction scoring system (EPSS) score for CVE-2022-35408

Probability of exploitation activity in the next 30 days EPSS Score History
~ 45 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-35408

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen

References for CVE-2022-35408

Products affected by CVE-2022-35408

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