Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-46795

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
11/01/2023
Last modified:
09/04/2025

Description

A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
4.70
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:amd:comboam4v2_pi_firmware:*:*:*:*:*:*:*:* 1.2.0.5 (excluding)
cpe:2.3:h:amd:comboam4v2_pi:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:renoirpi-fp6_firmware:*:*:*:*:*:*:*:* 1.0.0.7 (excluding)
cpe:2.3:h:amd:comboam4v2_pi:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:cezannepi-fp6_firmware:*:*:*:*:*:*:*:* 1.0.0.6 (excluding)
cpe:2.3:h:amd:cezannepi-fp6:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools