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

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CVE-2021-26316

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
11/01/2023
Last modified:
09/04/2025

Description

Failure to validate the communication buffer and communication service in the BIOS may allow an attacker to tamper with the buffer resulting in potential SMM (System Management Mode) arbitrary code execution.

Impact

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

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:amd:epyc_7h12_firmware:*:*:*:*:*:*:*:* romepi_1.0.0.d (excluding)
cpe:2.3:h:amd:epyc_7h12:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7f72_firmware:*:*:*:*:*:*:*:* romepi_1.0.0.d (excluding)
cpe:2.3:h:amd:epyc_7f72:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7f52_firmware:*:*:*:*:*:*:*:* romepi_1.0.0.d (excluding)
cpe:2.3:h:amd:epyc_7f52:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7f32_firmware:*:*:*:*:*:*:*:* romepi_1.0.0.d (excluding)
cpe:2.3:h:amd:epyc_7f32:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7742_firmware:*:*:*:*:*:*:*:* romepi_1.0.0.d (excluding)
cpe:2.3:h:amd:epyc_7742:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7702p_firmware:*:*:*:*:*:*:*:* romepi_1.0.0.d (excluding)
cpe:2.3:h:amd:epyc_7702p:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7702_firmware:*:*:*:*:*:*:*:* romepi_1.0.0.d (excluding)
cpe:2.3:h:amd:epyc_7702:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7662_firmware:*:*:*:*:*:*:*:* romepi_1.0.0.d (excluding)

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


References to Advisories, Solutions, and Tools