AMD Ryzen 9 4900hs Firmware vulnerabilities

8 CVEs affecting AMD Ryzen 9 4900hs Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2023-4969, published 2024-01-16.

More from AMD.

Highest priority

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

• CVE-2023-4969, published 2024-01-16. Medium severity, CVSS 6.5. EPSS: 1.2% chance of exploitation in the next 30 days. A GPU kernel can read sensitive data from another GPU kernel (even from another user or app) through an optimized GPU memory region called _local memory_ on various architectures.
• 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-2021-46758, published 2023-11-14. Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days. Insufficient validation of SPI flash addresses in the ASP (AMD Secure Processor) bootloader may allow an attacker to read data in memory mapped beyond SPI flash resulting in a potential loss of…
• CVE-2023-20555, published 2023-08-08. High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days. Insufficient input validation in CpmDisplayFeatureSmm may allow an attacker to corrupt SMM memory by overwriting an arbitrary bit in an attacker-controlled pointer potentially leading to arbitrary…
• CVE-2021-26341, published 2022-03-11. Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days. Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.
• CVE-2021-26401, published 2022-03-11. Medium severity, CVSS 5.6. EPSS: 0.3% chance of exploitation in the next 30 days. LFENCE/JMP (mitigation V2-2) may not sufficiently mitigate CVE-2017-5715 on some AMD CPUs.
• 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…