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

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2021-26403

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
11/01/2023
Last modified:
08/04/2025

Description

Insufficient checks in SEV may lead to a malicious hypervisor disclosing the launch secret potentially resulting in compromise of VM confidentiality.<br />

Impact

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

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

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

Base Score 3.x
6.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:amd:epyc_7001_firmware:*:*:*:*:*:*:*:* naplespi_1.0.0.e (excluding)
cpe:2.3:h:amd:epyc_7001:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7251_firmware:*:*:*:*:*:*:*:* naplespi_1.0.0.e (excluding)
cpe:2.3:h:amd:epyc_7251:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7261_firmware:*:*:*:*:*:*:*:* naplespi_1.0.0.e (excluding)
cpe:2.3:h:amd:epyc_7261:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7281_firmware:*:*:*:*:*:*:*:* naplespi_1.0.0.e (excluding)
cpe:2.3:h:amd:epyc_7281:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7301_firmware:*:*:*:*:*:*:*:* naplespi_1.0.0.e (excluding)
cpe:2.3:h:amd:epyc_7301:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7351_firmware:*:*:*:*:*:*:*:* naplespi_1.0.0.e (excluding)
cpe:2.3:h:amd:epyc_7351:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7351p_firmware:*:*:*:*:*:*:*:* naplespi_1.0.0.e (excluding)
cpe:2.3:h:amd:epyc_7351p:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:epyc_7371_firmware:*:*:*:*:*:*:*:* naplespi_1.0.0.e (excluding)

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


References to Advisories, Solutions, and Tools