AMD Ryzen 5 3500x Firmware vulnerabilities

16 CVEs affecting AMD Ryzen 5 3500x Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2023-20533, published 2023-11-14.

Highest priority

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

CVE-2023-20593, published 2023-07-24. Medium severity, CVSS 5.5. EPSS: 5.2% chance of exploitation in the next 30 days. An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information.
CVE-2022-23821, published 2023-11-14. Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days. Improper access control in System Management Mode (SMM) may allow an attacker to write to SPI ROM potentially leading to arbitrary code execution.
CVE-2022-23820, published 2023-11-14. Critical severity, CVSS 9.8. EPSS: 0.7% chance of exploitation in the next 30 days. Failure to validate the AMD SMM communication buffer may allow an attacker to corrupt the SMRAM potentially leading to arbitrary code execution.
CVE-2023-20559, published 2023-04-02. High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days. Insufficient control flow management in AmdCpmGpioInitSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to escalation of privileges.
CVE-2023-20558, published 2023-04-02. High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days. Insufficient control flow management in AmdCpmOemSmm may allow a privileged attacker to tamper with the SMM handler potentially leading to an escalation of privileges.
CVE-2023-20589, published 2023-08-08. Medium severity, CVSS 6.8. EPSS: 0.6% chance of exploitation in the next 30 days. An attacker with specialized hardware and physical access to an impacted device may be able to perform a voltage fault injection attack resulting in compromise of the ASP secure boot potentially…
CVE-2021-46774, published 2023-11-14. High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days. Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.
CVE-2023-20533, published 2023-11-14. High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days. Insufficient DRAM address validation in System Management Unit (SMU) may allow an attacker to read/write from/to an invalid DRAM address, potentially resulting in denial-of-service.
CVE-2021-26356, published 2023-05-09. High severity, CVSS 7.4. EPSS: 0.4% chance of exploitation in the next 30 days. A TOCTOU in ASP bootloader may allow an attacker to tamper with the SPI ROM following data read to memory potentially resulting in S3 data corruption and information disclosure.
CVE-2022-27672, published 2023-03-01. Medium severity, CVSS 4.7. EPSS: 0.3% chance of exploitation in the next 30 days. When SMT is enabled, certain AMD processors may speculatively execute instructions using a target from the sibling thread after an SMT mode switch potentially resulting in information disclosure.

Latest

CVE-2021-26371, published 2023-05-09. Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days. A compromised or malicious ABL or UApp could send a SHA256 system call to the bootloader, which may result in exposure of ASP memory to userspace, potentially leading to information…
CVE-2021-26354, published 2023-05-09. Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days. Insufficient bounds checking in ASP may allow an attacker to issue a system call from a compromised ABL which may cause arbitrary memory values to be initialized to zero, potentially leading to…