CVE-2021-26356highCWE-367

CVE-2021-26356: high-severity vulnerability in AMD 1st Gen AMD EPYC™ Processors

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.4epss 0.4%
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
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