CVE-2025-52536: AMD Epyc 7003 Series Processors

Medium severity, CVSS 6.7. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Prevention of Lock Bit Modification in SEV firmware could allow a privileged attacker to downgrade firmware potentially resulting in a loss of integrity.

Affected products

• AMD AMD Epyc 7003 Series Processors
• AMD AMD Epyc 8004 Series Processors
• AMD AMD Epyc 9004 Series Processors
• AMD AMD Epyc 9005 Series Processors
• AMD AMD Epyc Embedded 7003 Series Processors
• AMD AMD Epyc Embedded 8004 Series Processors
• AMD AMD Epyc Embedded 9004 Series Processors Formerly Codenamed Bergamo
• AMD AMD Epyc Embedded 9004 Series Processors Formerly Codenamed Genoa
• AMD AMD Epyc Embedded 9005 Series Processors

Published 2026-02-10. Last modified 2026-06-17.