AMD Epyc Embedded 7003 vulnerabilities

9 CVEs affecting AMD Epyc Embedded 7003, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2023-20577, published 2026-09-02.

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Known exploited (CISA KEV) first, then by EPSS exploit probability.

• CVE-2023-31315, published 2024-08-12. High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days. Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access to modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code…
• CVE-2023-31356, published 2024-08-13. Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days. Incomplete system memory cleanup in SEV firmware could allow a privileged attacker to corrupt guest private memory, potentially resulting in a loss of data integrity.
• CVE-2024-21925, published 2025-02-11. High severity, CVSS 8.2. EPSS: 0.2% chance of exploitation in the next 30 days. Improper input validation within the AmdPspP2CmboxV2 driver may allow a privileged attacker to overwrite SMRAM, leading to arbitrary code execution.
• CVE-2022-23829, published 2024-06-18. High severity, CVSS 8.2. EPSS: 0.2% chance of exploitation in the next 30 days. A potential weakness in AMD SPI protection features may allow a malicious attacker with Ring0 (kernel mode) access to bypass the native System Management Mode (SMM) ROM protections.
• CVE-2023-31345, published 2025-02-12. High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days. Improper input validation in the SMM handler may allow a privileged attacker to overwrite SMRAM, potentially leading to arbitrary code execution.
• CVE-2023-31343, published 2025-02-11. High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days. Improper input validation in the SMM handler may allow a privileged attacker to overwrite SMRAM, potentially leading to arbitrary code execution.
• CVE-2023-31342, published 2025-02-11. High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days. Improper input validation in the SMM handler may allow a privileged attacker to overwrite SMRAM, potentially leading to arbitrary code execution.
• CVE-2023-20577, published 2026-09-02. High severity, CVSS 7.4. EPSS: 0.2% chance of exploitation in the next 30 days. A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI flash, potentially resulting in arbitrary code execution.
• CVE-2024-36347, published 2025-06-27. Medium severity, CVSS 6.4. EPSS: 0.1% chance of exploitation in the next 30 days. Improper signature verification in AMD CPU ROM microcode patch loader may allow an attacker with local administrator privilege to load malicious microcode, potentially resulting in loss of integrity…