Cyber Resilience

CVE-2024-52877

High

Published: 15 May 2025

Published
15 May 2025
Modified
15 August 2025
KEV Added
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Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score 0.0029 53.0th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-52877 is a high-severity Buffer Over-read (CWE-126) vulnerability in Insyde Insydeh2O. Its CVSS base score is 7.5 (High).

Operationally, ranked in the top 47.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

more

driver, callback function SmmCreateVariableLockList () calls CreateVariableLockListInSmm (). In CreateVariableLockListInSmm (), it uses StrSize () to get variable name size and it could lead to a buffer over-read.

CWE(s)
CWE-126

Related Threats

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

Affected Assets

insyde
insydeh2o
5.2 — 5.2.05.29.50 · 5.3 — 5.3.05.38.50 · 5.4 — 5.4.05.46.50

Mitigating Controls

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

References