Amd Epyc Embedded 7002 Series Processors
Monthly
Local privilege escalation affects AMD Zen 2-based processors (Ryzen 3000/4000/5000 series, Threadripper PRO 3000 WX, EPYC 7002, and various embedded parts) where improper isolation of shared resources in the CPU operation cache lets a low-privileged attacker corrupt instructions executed at a higher privilege level. Reported by AMD and tracked as AMD-SB-7052 (with parallel Xen XSA-490 and Linux/OS-vendor advisories), it carries a CVSS 4.0 base score of 7.3 but requires local access and high attack complexity. There is no public exploit identified at time of analysis, and the EPSS probability is negligible at 0.01% (2nd percentile).
Local privilege escalation in the AMD Platform Configuration Blob (APCB) SMM driver, shipped in AGESA firmware across nearly the entire modern AMD EPYC, Ryzen, Threadripper, and Instinct MI300 line, lets a Ring 0 attacker escalate into System Management Mode (SMM) and potentially run arbitrary code below the operating system. The flaw stems from the SMM driver improperly invoking UEFI boot services, and AMD-reported it with a CVSS 4.0 base of 7.1; there is no public exploit identified at time of analysis and EPSS is negligible at 0.01%. Because SMM code runs at a higher trust level than the OS kernel, successful exploitation can undermine firmware integrity and any SMM-based security guarantees.
Local privilege escalation affects AMD Zen 2-based processors (Ryzen 3000/4000/5000 series, Threadripper PRO 3000 WX, EPYC 7002, and various embedded parts) where improper isolation of shared resources in the CPU operation cache lets a low-privileged attacker corrupt instructions executed at a higher privilege level. Reported by AMD and tracked as AMD-SB-7052 (with parallel Xen XSA-490 and Linux/OS-vendor advisories), it carries a CVSS 4.0 base score of 7.3 but requires local access and high attack complexity. There is no public exploit identified at time of analysis, and the EPSS probability is negligible at 0.01% (2nd percentile).
Local privilege escalation in the AMD Platform Configuration Blob (APCB) SMM driver, shipped in AGESA firmware across nearly the entire modern AMD EPYC, Ryzen, Threadripper, and Instinct MI300 line, lets a Ring 0 attacker escalate into System Management Mode (SMM) and potentially run arbitrary code below the operating system. The flaw stems from the SMM driver improperly invoking UEFI boot services, and AMD-reported it with a CVSS 4.0 base of 7.1; there is no public exploit identified at time of analysis and EPSS is negligible at 0.01%. Because SMM code runs at a higher trust level than the OS kernel, successful exploitation can undermine firmware integrity and any SMM-based security guarantees.