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High 7.4Published Sep 2, 2026
CVE-2023-20577A 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.
Updated under an hour ago ()
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It affects AMD 2nd Gen AMD EPYC™ Processors and 33 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-121
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- AMD
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
AMD 2nd Gen AMD EPYC™ Processors amd:2nd_gen_amd_epyctm_processors (from the name) | RomePI 1.0.0.H not affected | CNA record |
AMD 3rd Gen AMD EPYC™ Processors amd:3rd_gen_amd_epyctm_processors (from the name) | MilanPI 1.0.0.C not affected | CNA record |
AMD 4th Gen AMD EPYC™ Processors amd:4th_gen_amd_epyctm_processors (from the name) | GenoaPI 1.0.0.8 not affected | CNA record |
AMD AMD Instinct™ MI300A amd:instincttm_mi300a (from the name) | MI300 SR5 PI 1.0.0.1 not affected | CNA record |
AMD AMD Ryzen™ 3000 Series Desktop Processors amd:ryzentm_3000_series_desktop_processors (from the name) | ComboAM4v2 1.2.0.B not affected; ComboAM4 1.0.0.B not affected | CNA record |
AMD AMD Ryzen™ 5000 Series Desktop Processors amd:ryzentm_5000_series_desktop_processors (from the name) | ComboAM4v2 1.2.0.B not affected | CNA record |
AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics amd:ryzentm_5000_series_desktop_processors_with_radeontm_graphics (from the name) | ComboAM4v2 1.2.0.B not affected | CNA record |
AMD AMD Ryzen™ 7000 Series Processors amd:ryzentm_7000_series_processors (from the name) | ComboAM5 1.0.0.7b not affected | CNA record |
AMD AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics amd:athlontm_3000_series_desktop_processors_with_radeontm_graphics (from the name) | ComboAM4v2 1.2.0.B not affected; ComboAM4 1.0.0.B not affected | CNA record |
AMD AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics amd:ryzentm_4000_series_desktop_processors_with_radeontm_graphics (from the name) | ComboAM4v2 1.2.0.B not affected | CNA record |
AMD AMD Ryzen™ Threadripper™ 3000 Series Processors amd:ryzentm_threadrippertm_3000_series_processors (from the name) | CastlePeakPI-SP3r3 1.0.0.A not affected | CNA record |
AMD AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors amd:ryzentm_threadrippertm_pro_3000wx_series_processors (from the name) | ChagallWSPI-sWRX8 1.0.0.7 not affected; CastlePeakWSPI-sWRX8 1.0.0.C not affected | CNA record |
AMD AMD Ryzen™ Threadripper™ PRO 5000WX Processors amd:ryzentm_threadrippertm_pro_5000wx_processors (from the name) | ChagallWSPI-sWRX8 1.0.0.7 not affected | CNA record |
AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics amd:athlontm_3000_series_mobile_processors_with_radeontm_graphics (from the name) | PicassoPI-FP5 1.0.1.0 not affected | CNA record |
AMD AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics amd:ryzentm_3000_series_mobile_processor_with_radeontm_graphics (from the name) | PicassoPI-FP5 1.0.1.0 not affected | CNA record |
AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics amd:ryzentm_4000_series_mobile_processors_with_radeontm_graphics (from the name) | RenoirPI-FP6 1.0.0.D not affected | CNA record |
AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics amd:ryzentm_5000_series_mobile_processors_with_radeontm_graphics (from the name) | CezannePI-FP6 1.0.0.F not affected | CNA record |
AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics amd:ryzentm_7020_series_processors_with_radeontm_graphics (from the name) | MendocinoPI-FT6 1.0.0.6 not affected | CNA record |
AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics amd:ryzentm_6000_series_processors_with_radeontm_graphics (from the name) | RembrandtPI-FP7 1.0.0.9b not affected | CNA record |
AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics amd:ryzentm_7035_series_processors_with_radeontm_graphics (from the name) | RembrandtPI-FP7 1.0.0.9b not affected | CNA record |
AMD AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics amd:ryzentm_5000_series_processors_with_radeontm_graphics (from the name) | CezannePI-FP6 1.0.0.F not affected | CNA record |
AMD AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics amd:ryzentm_3000_series_processors_with_radeontm_graphics (from the name) | CezannePI-FP6 1.0.0.F not affected | CNA record |
AMD AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics amd:ryzentm_7040_series_processors_with_radeontm_graphics (from the name) | PhoenixPI-FP8-FP7 1.0.0.2 not affected | CNA record |
AMD AMD Ryzen™ 7045 Series Mobile Processors amd:ryzentm_7045_series_mobile_processors (from the name) | DragonRangeFL1PI 1.0.0.3a not affected | CNA record |
AMD AMD EPYC™ Embedded 3000 amd:epyctm_embedded_3000 (from the name) | Snowyowl PI 1.1.0.B not affected | CNA record |
AMD AMD EPYC™ Embedded 7002 amd:epyctm_embedded_7002 (from the name) | EmbRomePI-SP3 1.0.0.B not affected | CNA record |
AMD AMD EPYC™ Embedded 7003 amd:epyctm_embedded_7003 (from the name) | EmbMilanPI-SP3 1.0.0.8 not affected | CNA record |
AMD AMD EPYC™ Embedded 9003 amd:epyctm_embedded_9003 (from the name) | EmbGenoaPI-SP5 1.0.0.3 not affected | CNA record |
AMD AMD Ryzen™ Embedded R1000 amd:ryzentm_embedded_r1000 (from the name) | EmbeddedPI-FP5 1.2.0.A not affected | CNA record |
AMD AMD Ryzen™ Embedded R2000 amd:ryzentm_embedded_r2000 (from the name) | EmbeddedPI-FP5 1.0.0.2 not affected | CNA record |
AMD AMD Ryzen™ Embedded 5000 amd:ryzentm_embedded_5000 (from the name) | EmbAM4PI 1.0.0.4 not affected | CNA record |
AMD AMD Ryzen™ Embedded V1000 amd:ryzentm_embedded_v1000 (from the name) | EmbeddedPI-FP5 1.2.0.A not affected | CNA record |
AMD AMD Ryzen™ Embedded V2000 amd:ryzentm_embedded_v2000 (from the name) | EmbeddedPI-FP6 1.0.0.9 not affected | CNA record |
AMD AMD Ryzen™ Embedded V3000 amd:ryzentm_embedded_v3000 (from the name) | EmbeddedPI-FP7r2 1.0.0.8 not affected | CNA record |
References
- https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7009.html
The CVE record on cve.org NVD's entry
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