Cyber Resilience

CVE-2021-42113

High

Published: 03 February 2022

Published
03 February 2022
Modified
04 November 2025
KEV Added
Patch
CVSS Score v3.1 8.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0008 22.7th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-42113 is a high-severity an unspecified weakness vulnerability in Insyde Insydeh2O. Its CVSS base score is 8.2 (High).

Operationally, ranked at the 22.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An issue was discovered in StorageSecurityCommandDxe in Insyde InsydeH2O with Kernel 5.1 before 05.14.28, Kernel 5.2 before 05.24.28, and Kernel 5.3 before 05.32.25. An SMM callout vulnerability allows an attacker to hijack execution flow of code running in System Management…

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Mode. Exploiting this issue could lead to escalating privileges to SMM.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

insyde
insydeh2o
5.1 — 5.14.34 · 5.2 — 5.24.34 · 5.3 — 5.24.34

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References