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CVE record · CVE-2023-20577

Stack-based buffer overflow in 2nd Gen AMD EPYC™ Processors and others

CVSS 7.4 HighEPSS 0.0015 · 4th percentile

Published by the CVE Program (CNA: AMD) at 2 Sept 2026, 19:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
VendorProductVersions
AMD 2nd Gen AMD EPYC™ Processors
  • unaffected RomePI 1.0.0.H
Other versions: affected
AMD 3rd Gen AMD EPYC™ Processors
  • unaffected MilanPI 1.0.0.C
Other versions: affected
AMD 4th Gen AMD EPYC™ Processors
  • unaffected GenoaPI 1.0.0.8
Other versions: affected
AMD AMD Instinct™ MI300A
  • unaffected MI300 SR5 PI 1.0.0.1
Other versions: affected
AMD AMD Ryzen™ 3000 Series Desktop Processors
  • unaffected ComboAM4v2 1.2.0.B
  • unaffected ComboAM4 1.0.0.B
Other versions: affected
AMD AMD Ryzen™ 5000 Series Desktop Processors
  • unaffected ComboAM4v2 1.2.0.B
Other versions: affected
AMD AMD Ryzen™ 5000 Series Desktop Processors with Radeon™ Graphics
  • unaffected ComboAM4v2 1.2.0.B
Other versions: affected
AMD AMD Ryzen™ 7000 Series Processors
  • unaffected ComboAM5 1.0.0.7b
Other versions: affected
AMD AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics
  • unaffected ComboAM4v2 1.2.0.B
  • unaffected ComboAM4 1.0.0.B
Other versions: affected
AMD AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics
  • unaffected ComboAM4v2 1.2.0.B
Other versions: affected
AMD AMD Ryzen™ Threadripper™ 3000 Series Processors
  • unaffected CastlePeakPI-SP3r3 1.0.0.A
Other versions: affected
AMD AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors
  • unaffected ChagallWSPI-sWRX8 1.0.0.7
  • unaffected CastlePeakWSPI-sWRX8 1.0.0.C
Other versions: affected
AMD AMD Ryzen™ Threadripper™ PRO 5000WX Processors
  • unaffected ChagallWSPI-sWRX8 1.0.0.7
Other versions: affected
AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
  • unaffected PicassoPI-FP5 1.0.1.0
Other versions: affected
AMD AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics
  • unaffected PollockPI-FT5 1.0.0.6
Other versions: affected
AMD AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics
  • unaffected PicassoPI-FP5 1.0.1.0
Other versions: affected
AMD AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics
  • unaffected RenoirPI-FP6 1.0.0.D
Other versions: affected
AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
  • unaffected CezannePI-FP6 1.0.0.F
Other versions: affected
AMD AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics
  • unaffected CezannePI-FP6 1.0.0.F
Other versions: affected
AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics
  • unaffected MendocinoPI-FT6 1.0.0.6
Other versions: affected
AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics
  • unaffected RembrandtPI-FP7 1.0.0.9b
Other versions: affected
AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics
  • unaffected RembrandtPI-FP7 1.0.0.9b
Other versions: affected
AMD AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics
  • unaffected CezannePI-FP6 1.0.0.F
Other versions: affected
AMD AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics
  • unaffected CezannePI-FP6 1.0.0.F
Other versions: affected
AMD AMD Ryzen™ 7040 Series Processors with Radeon™ Graphics
  • unaffected PhoenixPI-FP8-FP7 1.0.0.2
Other versions: affected
AMD AMD Ryzen™ 7045 Series Mobile Processors
  • unaffected DragonRangeFL1PI 1.0.0.3a
Other versions: affected
AMD AMD EPYC™ Embedded 3000
  • unaffected Snowyowl PI 1.1.0.B
Other versions: affected
AMD AMD EPYC™ Embedded 7002
  • unaffected EmbRomePI-SP3 1.0.0.B
Other versions: affected
AMD AMD EPYC™ Embedded 7003
  • unaffected EmbMilanPI-SP3 1.0.0.8
Other versions: affected
AMD AMD EPYC™ Embedded 9003
  • unaffected EmbGenoaPI-SP5 1.0.0.3
Other versions: affected
AMD AMD Ryzen™ Embedded R1000
  • unaffected EmbeddedPI-FP5 1.2.0.A
Other versions: affected
AMD AMD Ryzen™ Embedded R2000
  • unaffected EmbeddedPI-FP5 1.0.0.2
Other versions: affected
AMD AMD Ryzen™ Embedded 5000
  • unaffected EmbAM4PI 1.0.0.4
Other versions: affected
AMD AMD Ryzen™ Embedded V1000
  • unaffected EmbeddedPI-FP5 1.2.0.A
Other versions: affected
AMD AMD Ryzen™ Embedded V2000
  • unaffected EmbeddedPI-FP6 1.0.0.9
Other versions: affected
AMD AMD Ryzen™ Embedded V3000
  • unaffected EmbeddedPI-FP7r2 1.0.0.8
Other versions: affected
Identifiers
CVE-2023-20577
CNA
AMD
Weakness (CWE)
CWE-121
Tags
Published
2 Sept 2026
Updated
3 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.4 High 3.1 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (AMD)
  • CISA KEV Not listed.
  • EPSS 0.0015, the 4th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 2 Sept 2026, 19:57 UTC Confirmed by the CVE List

Sources

References from the CNA

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.