CVE-2023-20577

State: Published
Severity: 7.4 High
Published: Sep 2, 2026
Updated: Sep 4, 2026
Reserved: Oct 27, 2022

Description

A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially resulting in arbitrary code execution.

Scores

CVSS	Score	Vector	Source
3.1	7.4 High	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	AMD

Weaknesses

CWE-121 Stack-based buffer overflow

Affected Products

Product	Versions
2nd Gen AMD EPYC™ ProcessorsAMD	RomePI 1.0.0.HNot affected
3rd Gen AMD EPYC™ ProcessorsAMD	MilanPI 1.0.0.CNot affected
4th Gen AMD EPYC™ ProcessorsAMD	GenoaPI 1.0.0.8Not affected
AMD Instinct™ MI300AAMD	MI300 SR5 PI 1.0.0.1Not affected
AMD Ryzen™ 3000 Series Desktop ProcessorsAMD	ComboAM4v2 1.2.0.BNot affected ComboAM4 1.0.0.BNot affected
AMD Ryzen™ 5000 Series Desktop ProcessorsAMD	ComboAM4v2 1.2.0.BNot affected
AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ GraphicsAMD	ComboAM4v2 1.2.0.BNot affected
AMD Ryzen™ 7000 Series ProcessorsAMD	ComboAM5 1.0.0.7bNot affected
AMD Athlon™ 3000 Series Desktop Processors with Radeon™ GraphicsAMD	ComboAM4v2 1.2.0.BNot affected ComboAM4 1.0.0.BNot affected
AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ GraphicsAMD	ComboAM4v2 1.2.0.BNot affected
AMD Ryzen™ Threadripper™ 3000 Series ProcessorsAMD	CastlePeakPI-SP3r3 1.0.0.ANot affected
AMD Ryzen™ Threadripper™ PRO 3000WX Series ProcessorsAMD	ChagallWSPI-sWRX8 1.0.0.7Not affected CastlePeakWSPI-sWRX8 1.0.0.CNot affected
AMD Ryzen™ Threadripper™ PRO 5000WX ProcessorsAMD	ChagallWSPI-sWRX8 1.0.0.7Not affected
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ GraphicsAMD	PicassoPI-FP5 1.0.1.0Not affected
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ GraphicsAMD	PollockPI-FT5 1.0.0.6Not affected
AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ GraphicsAMD	PicassoPI-FP5 1.0.1.0Not affected
AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ GraphicsAMD	RenoirPI-FP6 1.0.0.DNot affected
AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ GraphicsAMD	CezannePI-FP6 1.0.0.FNot affected
AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ GraphicsAMD	CezannePI-FP6 1.0.0.FNot affected
AMD Ryzen™ 7020 Series Processors with Radeon™ GraphicsAMD	MendocinoPI-FT6 1.0.0.6Not affected
AMD Ryzen™ 6000 Series Processors with Radeon™ GraphicsAMD	RembrandtPI-FP7 1.0.0.9bNot affected
AMD Ryzen™ 7035 Series Processors with Radeon™ GraphicsAMD	RembrandtPI-FP7 1.0.0.9bNot affected
AMD Ryzen™ 5000 Series Processors with Radeon™ GraphicsAMD	CezannePI-FP6 1.0.0.FNot affected
AMD Ryzen™ 3000 Series Processors with Radeon™ GraphicsAMD	CezannePI-FP6 1.0.0.FNot affected
AMD Ryzen™ 7040 Series Processors with Radeon™ GraphicsAMD	PhoenixPI-FP8-FP7 1.0.0.2Not affected
AMD Ryzen™ 7045 Series Mobile ProcessorsAMD	DragonRangeFL1PI 1.0.0.3aNot affected
AMD EPYC™ Embedded 3000AMD	Snowyowl PI 1.1.0.BNot affected
AMD EPYC™ Embedded 7002AMD	EmbRomePI-SP3 1.0.0.BNot affected
AMD EPYC™ Embedded 7003AMD	EmbMilanPI-SP3 1.0.0.8Not affected
AMD EPYC™ Embedded 9003AMD	EmbGenoaPI-SP5 1.0.0.3Not affected
AMD Ryzen™ Embedded R1000AMD	EmbeddedPI-FP5 1.2.0.ANot affected
AMD Ryzen™ Embedded R2000AMD	EmbeddedPI-FP5 1.0.0.2Not affected
AMD Ryzen™ Embedded 5000AMD	EmbAM4PI 1.0.0.4Not affected
AMD Ryzen™ Embedded V1000AMD	EmbeddedPI-FP5 1.2.0.ANot affected
AMD Ryzen™ Embedded V2000AMD	EmbeddedPI-FP6 1.0.0.9Not affected
AMD Ryzen™ Embedded V3000AMD	EmbeddedPI-FP7r2 1.0.0.8Not affected

References

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7009.html

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