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CVE record · CVE-2023-20521

TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory content verification, potentially leading to loss of confidentiality or a denial of…

CVSS 3.3 LowEPSS 0.0026 · 18th percentile

Published by the CVE Program (CNA: AMD) at 14 Nov 2023, 18:52 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 Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics “Picasso” AM4 Package name: PI
  • affected various
Other versions: unaffected
AMD Ryzen™ Threadripper™ 2000 Series Processors “Colfax” Package name: PI
  • affected various
Other versions: unaffected
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Dali”/”Dali” FP5 Package name: PI
  • affected various
Other versions: unaffected
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics “Pollock” Package name: PI
  • affected various
Other versions: unaffected
AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics “Picasso” FP5 Package name: PI
  • affected various
Other versions: unaffected
AMD 1st Gen AMD EPYC™ Processors Package name: PI
  • affected various
Other versions: unaffected
AMD 2nd Gen AMD EPYC™ Processors Package name: PI
  • affected various
Other versions: unaffected
AMD 3rd Gen AMD EPYC™ Processors Package name: PI
  • affected various
Other versions: unaffected
AMD AMD EPYC™ Embedded 3000
  • affected various
Other versions: unaffected
AMD AMD EPYC™ Embedded 7002
  • affected various
Other versions: unaffected
AMD AMD EPYC™ Embedded 7003
  • affected various
Other versions: unaffected
AMD AMD Ryzen™ Embedded R1000
  • affected various
Other versions: unaffected
AMD AMD Ryzen™ Embedded R2000
  • affected various
Other versions: unaffected
AMD AMD Ryzen™ Embedded V1000
  • affected various
Other versions: unaffected
Identifiers
CVE-2023-20521
CNA
AMD
Tags
Published
14 Nov 2023
Updated
2 Aug 2024

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
3.3 Low 3.1 CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L CNA (AMD)
  • CISA KEV Not listed.
  • EPSS 0.0026, the 18th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 14 Nov 2023. New records show when each source confirmed them.

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.