CVE detail

CVE-2021-26318 — CVE-2021-26318

Published 2021-10-13 · Modified 2026-06-17 · Vendor amd · Product athlon_firmware · Source nvd

MEDIUM

severity

CVSS-derived band

4.7

CVSS v3

0–10 scale

0.0033

EPSS probability

exploitation probability, 30d

25.0%

EPSS percentile

percentile vs all CVEs

NOT LISTED

CISA KEV

known exploited catalog

Description

A timing and power-based side channel attack leveraging the x86 PREFETCH instructions on some AMD CPUs could potentially result in leaked kernel address space information.

Remediation

No vendor-published fix data in our corpus for this CVE. Check the references below or the vendor's PSIRT / security advisories page.

References

cvedb.io · NVD · CISA KEV · FIRST EPSS · vendor advisories (CVE Program List v5). Informational only, no warranty — verify every remediation against the vendor advisory before acting on it. This product uses data from the NVD API but is not endorsed or certified by the NVD, CISA, FIRST.org or any vendor named. CVE® is a registered trademark of The MITRE Corporation.