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CVE-2021-26402

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)

Insufficient bounds checking in ASP (AMD Secure Processor) firmware while handling BIOS mailbox commands, may allow an attacker to write partially-controlled data out-of-bounds to SMM or SEV-ES regions which may lead to a potential loss of integrity and availability.

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.

2nd Gen EPYC

Vendor
AMD
Product
2nd Gen EPYC
Platforms
  • x86
Default status
unaffected
Package
AGESA
2nd Gen EPYC · 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 EPYC

Vendor
AMD
Product
3rd Gen EPYC
Platforms
  • x86
Default status
unaffected
Package
AGESA
3rd Gen EPYC · 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