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Vulnerabilities of AMD 3rd Gen AMD EPYC™ Processors

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CVE Summary Score Published
CVE-2023-20577 A heap overflow in SMM module may allow an attacker with access to a second vulnerability that enables writing to SPI… 7.4 High Sep 2, 2026
CVE-2023-31315 Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access to modify SMM… 7.5 High Aug 9, 2024
CVE-2024-21980 Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to potentially overwrite a… 7.9 High Aug 5, 2024
CVE-2024-21978 Improper input validation in SEV-SNP could allow a malicious hypervisor to read or overwrite guest memory potentially… 6.0 Medium Aug 5, 2024
CVE-2023-31355 Improper restriction of write operations in SNP firmware could allow a malicious hypervisor to overwrite a guest's UMC… 6.0 Medium Aug 5, 2024
CVE-2022-23829 A potential weakness in AMD SPI protection features may allow a malicious attacker with Ring0 (kernel mode) access to… 8.2 High Jun 18, 2024
CVE-2023-20587 Improper Access Control in System Management Mode (SMM) may allow an attacker access to the SPI flash potentially… 7.1 High Feb 13, 2024
CVE-2023-31347 Due to a code bug in Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a guest to observe… 4.9 Medium Feb 13, 2024
CVE-2023-31346 Failure to initialize memory in SEV Firmware may allow a privileged attacker to access stale data from other guests 6.0 Medium Feb 13, 2024
CVE-2023-20573 A privileged attacker can prevent delivery of debug exceptions to SEV-SNP guests potentially resulting in guests not… 3.2 Low Jan 11, 2024
CVE-2023-20566 Improper address validation in ASP with SNP enabled may potentially allow an attacker to compromise guest memory… 5.3 Medium Nov 14, 2023
CVE-2023-20519 A Use-After-Free vulnerability in the management of an SNP guest context page may allow a malicious hypervisor to… Not rated Nov 14, 2023
CVE-2022-23830 SMM configuration may not be immutable, as intended, when SNP is enabled resulting in a potential limited loss of… 1.9 Low Nov 14, 2023
CVE-2021-26345 Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an… 1.9 Low Nov 14, 2023
CVE-2023-20533 Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an… 6.1 Medium Nov 14, 2023
CVE-2023-20526 Insufficient input validation in the ASP Bootloader may enable a privileged attacker with physical access to expose… 1.9 Low Nov 14, 2023
CVE-2023-20521 TOCTOU in the ASP Bootloader may allow an attacker with physical access to tamper with SPI ROM records after memory… 3.3 Low Nov 14, 2023
CVE-2022-23820 Failure to validate the AMD SMM communication buffer may allow an attacker to corrupt the SMRAM potentially leading to… 7.5 High Nov 14, 2023
CVE-2021-46774 Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an… 6.7 Medium Nov 14, 2023
CVE-2023-20594 Improper initialization of variables in the DXE driver may allow a privileged user to leak sensitive information via… Not rated Sep 20, 2023
CVE-2023-20575 A potential power side-channel vulnerability in some AMD processors may allow an authenticated attacker to use the power… 6.5 Medium Jul 11, 2023
CVE-2021-46756 Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow an… 9.1 Critical May 9, 2023
CVE-2021-26371 A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure… 5.5 Medium May 9, 2023
CVE-2021-26356 A TOCTOU in ASP bootloader may allow an attacker to tamper with the SPI ROM following data read to memory potentially… 7.4 High May 9, 2023
CVE-2021-26354 Insufficient bounds checking in ASP may allow an attacker to issue a system call from a compromised ABL which may… 5.5 Medium May 9, 2023

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