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CVE-2021-38578

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CVE-2021-38578

Published: Mar 3, 2022

Modified: Nov 3, 2025

PUBLISHED

CVSS v3.1

7.4

HIGH

Description

Existing CommBuffer checks in SmmEntryPoint will not catch underflow when computing BufferSize.

VendorProductVersions

TianoCore

EDK II

affected
edk2-stable202208

Weaknesses (CWE)

CWE-124

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L

Attack Vector

Local

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

Low

References

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