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CVE-2021-26356

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2021
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

A TOCTOU in ASP bootloader may allow an attacker to tamper with the SPI ROM following data read to memory potentially resulting in S3 data corruption and information disclosure.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Ryzen™ 3000 Series Desktop Processors “Matisse” AM4

Vendor
AMD
Product
Ryzen™ 3000 Series Desktop Processors “Matisse” AM4
Platforms
  • x86
Default status
unaffected
Package
AGESA
Ryzen™ 3000 Series Desktop Processors “Matisse” AM4 · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
various affectedUnavailableUnavailableUnavailableNone listed

AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4

Vendor
AMD
Product
AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4
Platforms
  • x86
Default status
unaffected
Package
AGESA
AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4 · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
various affectedUnavailableUnavailableUnavailableNone listed

3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT

Vendor
AMD
Product
3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT
Platforms
  • x86
Default status
unaffected
Package
AGESA
3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDT · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
variousaffectedUnavailableUnavailableUnavailableNone listed

Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS

Vendor
AMD
Product
Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS
Platforms
  • x86
Default status
unaffected
Package
AGESA
Ryzen™ Threadripper™ PRO Processors “Castle Peak” WS · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
various affectedUnavailableUnavailableUnavailableNone listed

Ryzen™ Threadripper™ PRO Processors “Chagall” WS

Vendor
AMD
Product
Ryzen™ Threadripper™ PRO Processors “Chagall” WS
Platforms
  • x86
Default status
unaffected
Package
AGESA
Ryzen™ Threadripper™ PRO Processors “Chagall” WS · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
various affectedUnavailableUnavailableUnavailableNone listed

1st Gen AMD EPYC™ Processors

Vendor
AMD
Product
1st Gen AMD EPYC™ Processors
Platforms
  • x86
Default status
unaffected
Package
AGESA
1st Gen AMD EPYC™ Processors · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
various affectedUnavailableUnavailableUnavailableNone listed

2nd Gen AMD EPYC™ Processors

Vendor
AMD
Product
2nd Gen AMD EPYC™ Processors
Platforms
  • x86
Default status
unaffected
Package
AGESA
2nd Gen AMD EPYC™ Processors · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
various affectedUnavailableUnavailableUnavailableNone listed

3rd Gen AMD EPYC™ Processors

Vendor
AMD
Product
3rd Gen AMD EPYC™ Processors
Platforms
  • x86
Default status
unaffected
Package
AGESA
3rd Gen AMD EPYC™ Processors · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
various affectedUnavailableUnavailableUnavailableNone listed