CVE-2021-46772

Severity CVSS v4.0:

Pending analysis

Type:

CWE-125 Out-of-bounds Read

Publication date:

13/08/2024

Last modified:

15/04/2026

Description

Insufficient input validation in the ABL may allow a privileged<br /> attacker with access to the BIOS menu or UEFI shell to tamper with the<br /> structure headers in SPI ROM causing an out of bounds memory read and write,<br /> potentially resulting in memory corruption or denial of service.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L CVSS v3.1 Severity and Metrics:

Base Score: 3.90 LOW
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): Low
Availability (A): Low

Base Score 3.x

3.90

Severity 3.x

LOW

References to Advisories, Solutions, and Tools

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3003.html
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-4004.html
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-5002.html