CVE-2021-38578 HIGH

CVE-2021-38578

Vendor Tianocore
Product EDK II
Weakness CWE-124
Published March 3, 2022
Last update November 3, 2025
View on NVD All CVEs

CVSS base score

7.4/10
Attack vector Local
Attack complexity High
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

March 3, 2022 CVE published
November 3, 2025 Record updated