cvedb.io
CVE-2021-42554
HIGH · CVSS 8.2
EPSS exploitation probability: 0%
Published 2022-02-03T02:15:07.380 · Last modified 2026-06-17T04:09:49.127

Summary

An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before 05.35.42, Kernel 5.4 before 05.42.51, and Kernel 5.5 before 05.50.51. An SMM memory corruption vulnerability in FvbServicesRuntimeDxe allows a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

Affected products

insyde — insydeh2o

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.