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Case File

CVE-2020-27339

MEDIUM · CVSS 6.7 EPSS 0.32%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-06-16 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

CVE
CVE-2020-27339
Severity
MEDIUM
CVSS
6.7
EPSS
0.32%

Original NVD Description

In the kernel in Insyde InsydeH2O 5.x, certain SMM drivers did not correctly validate the CommBuffer and CommBufferSize parameters, allowing callers to corrupt either the firmware or the OS memory. The fixed versions for this issue in the AhciBusDxe, IdeBusDxe, NvmExpressDxe, SdHostDriverDxe, and SdMmcDeviceDxe drivers are 05.16.25, 05.26.25, 05.35.25, 05.43.25, and 05.51.25 (for Kernel 5.1 through 5.5).