VULNERABILITY INTELLIGENCE
CVE-2024-21977
CVSS score3.2 LOW
EPSS probability0.15%
CISA KEVNot currently listed
Published2025-09-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
Description
Incomplete cleanup after loading a CPU microcode patch may allow a privileged attacker to degrade the entropy of the RDRAND instruction, potentially resulting in loss of integrity for SEV-SNP guests.
Weakness classification
- psirt@amd.com: CWE-459