AMD Ryzen 5 3450g Firmware vulnerabilities

16 CVEs affecting AMD Ryzen 5 3450g Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2021-26346, published 2023-01-11.

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

• CVE-2022-29900, published 2022-07-12. Medium severity, CVSS 6.5. EPSS: 3.9% chance of exploitation in the next 30 days. Mis-trained branch predictions for return instructions may allow arbitrary speculative code execution under certain microarchitecture-dependent conditions.
• CVE-2022-23823, published 2022-06-15. Medium severity, CVSS 6.5. EPSS: 1.2% chance of exploitation in the next 30 days. A potential vulnerability in some AMD processors using frequency scaling may allow an authenticated attacker to execute a timing attack to potentially enable information disclosure.
• CVE-2022-23825, published 2022-07-14. Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days. Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure.
• CVE-2022-23824, published 2022-11-09. Medium severity, CVSS 5.5. EPSS: 0.6% chance of exploitation in the next 30 days. IBPB may not prevent return branch predictions from being specified by pre-IBPB branch targets leading to a potential information disclosure.
• CVE-2021-26317, published 2022-05-12. High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days. Failure to verify the protocol in SMM may allow an attacker to control the protocol and modify SPI flash resulting in a potential arbitrary code execution.
• CVE-2021-26386, published 2022-05-12. High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days. A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system call to the Stage 2 Bootloader potentially leading to corrupt memory and code execution.
• CVE-2021-26339, published 2022-05-11. Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days. A bug in AMD CPU’s core logic may allow for an attacker, using specific code from an unprivileged VM, to trigger a CPU core hang resulting in a potential denial of service. AMD believes the specific…
• CVE-2021-26337, published 2021-11-16. Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days. Insufficient DRAM address validation in System Management Unit (SMU) may result in a DMA read from invalid DRAM address to SRAM resulting in SMU not servicing further requests.
• CVE-2021-26366, published 2022-05-12. High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days. An attacker, who gained elevated privileges via some other vulnerability, may be able to read data from Boot ROM resulting in a loss of system integrity.
• CVE-2021-26369, published 2022-05-12. High severity, CVSS 7.8. EPSS: 0.2% chance of exploitation in the next 30 days. A malicious or compromised UApp or ABL may be used by an attacker to send a malformed system call to the bootloader, resulting in out-of-bounds memory accesses.

Latest

• CVE-2021-26346, published 2023-01-11. Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days. Failure to validate the integer operand in ASP (AMD Secure Processor) bootloader may allow an attacker to introduce an integer overflow in the L2 directory table in SPI flash resulting in a potential…
• CVE-2021-46778, published 2022-08-10. Medium severity, CVSS 5.6. EPSS: 0.2% chance of exploitation in the next 30 days. Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By…
• CVE-2021-26368, published 2022-05-12. Medium severity, CVSS 4.4. EPSS: 0.1% chance of exploitation in the next 30 days. Insufficient check of the process type in Trusted OS (TOS) may allow an attacker with privileges to enable a lesser privileged process to unmap memory owned by a higher privileged process resulting…
• CVE-2021-26363, published 2022-05-12. Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days. A malicious or compromised UApp or ABL could potentially change the value that the ASP uses for its reserved DRAM, to one outside of the fenced area, potentially leading to data exposure.