CVSS 3.1
4.7 mediumCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:NCVE-2021-26318
Medium (4.7) in amd. EPSS 0.3% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-203, CWE-208
- Published
- Modified
- Record from
- the NVD, synced
Affected
- amd:athlon_firmware
- amd:athlon_pro_firmware
- amd:epyc_firmware
- amd:ryzen_firmware
- amd:ryzen_pro_firmware