CVE-2021-26356
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.4epss 0.4%
exploitation probability
0.4%top 66% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
AMD · 1st Gen AMD EPYC™ ProcessorsAMD · 2nd Gen AMD EPYC™ ProcessorsAMD · 3rd Gen AMD EPYC™ ProcessorsAMD · 3rd Gen AMD Ryzen™ Threadripper™ Processors “Castle Peak” HEDTAMD · AMD Ryzen™ 5000 Series Desktop Processors “Vermeer” AM4AMD · Ryzen™ 3000 Series Desktop Processors “Matisse” AM4AMD · Ryzen™ Threadripper™ PRO Processors “Castle Peak” WSAMD · Ryzen™ Threadripper™ PRO Processors “Chagall” WS