CVE-2021-26344
Published: Aug 13, 2024
Modified: Mar 18, 2025
CVSS v3.1
7.2
Description
An out of bounds memory write when processing the AMD PSP1 Configuration Block (APCB) could allow an attacker with access the ability to modify the BIOS image, and the ability to sign the resulting image, to potentially modify the APCB block resulting in arbitrary code execution.
| Vendor | Product | Versions |
|---|---|---|
AMD | AMD EPYC™ 7001 Series Processors | affected various |
AMD | AMD EPYC™ 7002 Series Processors | unaffected RomePI 1.0.0.C |
AMD | AMD EPYC™ 7003 Series Processors | unaffected MilanPI 1.0.0.5 |
AMD | AMD Ryzen™ 3000 Series Desktop Processors | affected various |
AMD | AMD Ryzen™ 5000 Series Desktop Processors | unaffected ComboAM4V2 1.2.0.A |
AMD | AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics | unaffected ComboAM4V2 1.2.0.A |
AMD | AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics | affected various |
AMD | AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics | affected various |
AMD | AMD Ryzen™ Threadripper™ 3000 Series Processors | affected various |
AMD | AMD Ryzen™ Threadripper™ PRO 5000WX Processors | unaffected ChagallWSPI-sWRX8 1.0.0.6 |
AMD | AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics | affected various |
AMD | AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics | affected various |
AMD | AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics | affected various |
AMD | AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics | affected various |
AMD | AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | affected various |
AMD | AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics | unaffected CezannePI-FP6 1.0.0.E |
AMD | AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics | unaffected MendocinoPI-FT6 1.0.0.3 |
AMD | AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | unaffected RembrandtPI-FP7 1.0.0.7 |
AMD | AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics | unaffected RembrandtPI-FP7 1.0.0.7 |
AMD | AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics | unaffected CezannePI-FP6 1.0.0.E |
AMD | AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics | unaffected CezannePI-FP6 1.0.0.E |
AMD | AMD EPYC™ Embedded 7002 Series Processors | unaffected EmbRomePI-SP3 1.0.0.6 |
AMD | AMD EPYC™ Embedded 3000 Series Processors | affected Various |
AMD | AMD EPYC™ Embedded 7003 Series Processors | unaffected EmbMilanPI-SP3 1.0.0.2 |
AMD | AMD Ryzen™ Embedded R1000 Series Processors | affected v |
AMD | AMD Ryzen™ Embedded R2000 Series Processors | affected v |
AMD | AMD Ryzen™ Embedded 5000 Series Processors | affected v |
AMD | AMD Ryzen™ Embedded V1000 Series Processors | affected v |
AMD | AMD Ryzen™ Embedded V2000 Series Processors | affected v |
AMD | AMD Ryzen™ Embedded V3000 Series Processors | unaffected EmbeddedPI-FP7r2 1.0.0.4 |
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
Security Training
Train your team to recognize and prevent security threats with our comprehensive security awareness program.
Start TrainingVulnerability Scanning
Discover vulnerabilities in your applications and infrastructure before attackers do.
Scan Now