CVE-2021-38578

7.4 HIGH
Published: March 03, 2022 Modified: November 03, 2025
View on NVD

Description

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

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://bugzilla.tianocore.org/show_bug.cgi?id=3387
Source: infosec@edk2.groups.io
Issue Tracking Vendor Advisory
https://www.insyde.com/security-pledge/SA-2023024
Source: infosec@edk2.groups.io
Third Party Advisory
https://bugzilla.tianocore.org/show_bug.cgi?id=3387
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html
Source: af854a3a-2127-422b-91ae-364da2661108
https://www.insyde.com/security-pledge/SA-2023024
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.4 / 10.0
EPSS (Exploit Probability)
0.1%
20th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-124 CWE-787

Affected Vendors

tianocore insyde

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