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Unrated severityNVD Advisory· Published Aug 13, 2024· Updated Mar 18, 2025

CVE-2021-26344

CVE-2021-26344

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.

Affected products

29
  • AMD/PSP1 Configuration Blockllm-create
  • AMD/AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphicsv5
    Range: various
  • AMD/AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphicsv5
    Range: various
  • AMD/AMD EPYC™ 7001 Series Processorsv5
    Range: various
  • AMD/AMD EPYC™ 7002 Series Processorsv5
    Range: RomePI 1.0.0.C
  • AMD/AMD EPYC™ 7003 Series Processorsv5
    Range: MilanPI 1.0.0.5
  • AMD/AMD EPYC™ Embedded 3000 Series Processorsv5
    Range: Various
  • AMD/AMD EPYC™ Embedded 7002 Series Processorsv5
    Range: EmbRomePI-SP3 1.0.0.6
  • AMD/AMD EPYC™ Embedded 7003 Series Processorsv5
    Range: EmbMilanPI-SP3 1.0.0.2
  • AMD/AMD Ryzen™ 3000 Series Desktop Processorsv5
    Range: various
  • AMD/AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphicsv5
    Range: various
  • AMD/AMD Ryzen™ 3000 Series Processors with Radeon™ Graphicsv5
    Range: CezannePI-FP6 1.0.0.E
  • AMD/AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphicsv5
    Range: various
  • AMD/AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphicsv5
    Range: various
  • AMD/AMD Ryzen™ 5000 Series Desktop Processorsv5
    Range: ComboAM4V2 1.2.0.A
  • AMD/AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphicsv5
    Range: ComboAM4V2 1.2.0.A
  • AMD/AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphicsv5
    Range: CezannePI-FP6 1.0.0.E
  • AMD/AMD Ryzen™ 5000 Series Processors with Radeon™ Graphicsv5
    Range: CezannePI-FP6 1.0.0.E
  • AMD/AMD Ryzen™ 6000 Series Processors with Radeon™ Graphicsv5
    Range: RembrandtPI-FP7 1.0.0.7
  • AMD/AMD Ryzen™ 7020 Series Processors with Radeon™ Graphicsv5
    Range: MendocinoPI-FT6 1.0.0.3
  • AMD/AMD Ryzen™ 7035 Series Processors with Radeon™ Graphicsv5
    Range: RembrandtPI-FP7 1.0.0.7
  • AMD/AMD Ryzen™ Embedded 5000 Series Processorsv5
    Range: v
  • AMD/AMD Ryzen™ Embedded R1000 Series Processorsv5
    Range: v
  • AMD/AMD Ryzen™ Embedded R2000 Series Processorsv5
    Range: v
  • AMD/AMD Ryzen™ Embedded V1000 Series Processorsv5
    Range: v
  • AMD/AMD Ryzen™ Embedded V2000 Series Processorsv5
    Range: v
  • AMD/AMD Ryzen™ Embedded V3000 Series Processorsv5
    Range: EmbeddedPI-FP7r2 1.0.0.4
  • AMD/AMD Ryzen™ Threadripper™ 3000 Series Processorsv5
    Range: various
  • AMD/AMD Ryzen™ Threadripper™ PRO 5000WX Processorsv5
    Range: ChagallWSPI-sWRX8 1.0.0.6

Patches

Vulnerability mechanics

References

1

News mentions

0

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