Public vulnerability disclosure
CVE-2023-20577
CVE-2023-20577
publishedCWE-121
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.
Technical severity7.4 highCVSS 3.1 · CNA: AMD
Published2026-09-02Source updated 2026-11-03
Collected2026-11-032 attributed sources
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| 2nd Gen AMD EPYC™ Processors AMD |
RomePI 1.0.0.H (unaffected)
Other versions: affected |
CNA: AMD |
| 3rd Gen AMD EPYC™ Processors AMD |
MilanPI 1.0.0.C (unaffected)
Other versions: affected |
CNA: AMD |
| 4th Gen AMD EPYC™ Processors AMD |
GenoaPI 1.0.0.8 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Instinct™ MI300A AMD |
MI300 SR5 PI 1.0.0.1 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 3000 Series Desktop Processors AMD |
ComboAM4v2 1.2.0.B (unaffected) ComboAM4 1.0.0.B (unaffected) Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 5000 Series Desktop Processors AMD |
ComboAM4v2 1.2.0.B (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics AMD |
ComboAM4v2 1.2.0.B (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 7000 Series Processors AMD |
ComboAM5 1.0.0.7b (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics AMD |
ComboAM4v2 1.2.0.B (unaffected) ComboAM4 1.0.0.B (unaffected) Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics AMD |
ComboAM4v2 1.2.0.B (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Threadripper™ 3000 Series Processors AMD |
CastlePeakPI-SP3r3 1.0.0.A (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors AMD |
ChagallWSPI-sWRX8 1.0.0.7 (unaffected) CastlePeakWSPI-sWRX8 1.0.0.C (unaffected) Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Threadripper™ PRO 5000WX Processors AMD |
ChagallWSPI-sWRX8 1.0.0.7 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics AMD |
PicassoPI-FP5 1.0.1.0 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics AMD |
PollockPI-FT5 1.0.0.6 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics AMD |
PicassoPI-FP5 1.0.1.0 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics AMD |
RenoirPI-FP6 1.0.0.D (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics AMD |
CezannePI-FP6 1.0.0.F (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics AMD |
MendocinoPI-FT6 1.0.0.6 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics AMD |
RembrandtPI-FP7 1.0.0.9b (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics AMD |
RembrandtPI-FP7 1.0.0.9b (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics AMD |
CezannePI-FP6 1.0.0.F (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics AMD |
CezannePI-FP6 1.0.0.F (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics AMD |
PhoenixPI-FP8-FP7 1.0.0.2 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ 7045 Series Mobile Processors AMD |
DragonRangeFL1PI 1.0.0.3a (unaffected)
Other versions: affected |
CNA: AMD |
| AMD EPYC™ Embedded 3000 AMD |
Snowyowl PI 1.1.0.B (unaffected)
Other versions: affected |
CNA: AMD |
| AMD EPYC™ Embedded 7002 AMD |
EmbRomePI-SP3 1.0.0.B (unaffected)
Other versions: affected |
CNA: AMD |
| AMD EPYC™ Embedded 7003 AMD |
EmbMilanPI-SP3 1.0.0.8 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD EPYC™ Embedded 9003 AMD |
EmbGenoaPI-SP5 1.0.0.3 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Embedded R1000 AMD |
EmbeddedPI-FP5 1.2.0.A (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Embedded R2000 AMD |
EmbeddedPI-FP5 1.0.0.2 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Embedded 5000 AMD |
EmbAM4PI 1.0.0.4 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Embedded V1000 AMD |
EmbeddedPI-FP5 1.2.0.A (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Embedded V2000 AMD |
EmbeddedPI-FP6 1.0.0.9 (unaffected)
Other versions: affected |
CNA: AMD |
| AMD Ryzen™ Embedded V3000 AMD |
EmbeddedPI-FP7r2 1.0.0.8 (unaffected)
Other versions: affected |
CNA: AMD |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 7.4 high |
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: AMD |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
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