CWE-1233
Security-Sensitive Hardware Controls with Missing Lock Bit Protection
Monthly
Privilege escalation into the AMD Secure Processor affects AMD EPYC 8004/9004/9005 and EPYC Embedded 8004/9004/9005 series processors, where missing lock bit protection on NBIO registers lets a local admin-privileged attacker gain arbitrary System Management Network (SMN) access. This can lead to arbitrary code execution inside the AMD Secure Processor (ASP) and breaks the confidentiality and integrity guarantees SEV-SNP is supposed to provide to confidential-computing guests. There is no public exploit identified at time of analysis, EPSS risk is negligible (0.01%), and CISA SSVC rates exploitation as none but technical impact as total.
Missing hardware lock bit protection on NBIO registers in AMD EPYC server processors (7003/8004/9004/9005 series, including embedded variants) allows a local admin-privileged attacker to reconfigure MMIO routing, undermining SEV-SNP guest integrity guarantees. The vulnerability is significant in confidential computing contexts where SEV-SNP is deployed to protect tenant workloads from potentially malicious host operators - precisely the trust boundary AMD's hardware security feature is designed to enforce. No public exploit exists and EPSS (0.01%, 2nd percentile) combined with SSVC exploitation status of 'none' indicate negligible near-term mass exploitation risk; however, targeted abuse by privileged insiders or compromised hypervisor hosts is the realistic concern.
Kapsch TrafficCom RIS-9160 & RIS-9260 Roadside Units (RSUs) v3.2.0.829.23, v3.8.0.1119.42, and v4.6.0.1211.28 were discovered to lack SPI Protected Range Registers (PRRs), allowing attackers with. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Incorrect access control in the SPI Flash Chip of Kapsch TrafficCom RIS-9160 & RIS-9260 Roadside Units (RSUs) v3.2.0.829.23, v3.8.0.1119.42, and v4.6.0.1211.28 allows physically proximate attackers. Rated low severity (CVSS 3.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Privilege escalation into the AMD Secure Processor affects AMD EPYC 8004/9004/9005 and EPYC Embedded 8004/9004/9005 series processors, where missing lock bit protection on NBIO registers lets a local admin-privileged attacker gain arbitrary System Management Network (SMN) access. This can lead to arbitrary code execution inside the AMD Secure Processor (ASP) and breaks the confidentiality and integrity guarantees SEV-SNP is supposed to provide to confidential-computing guests. There is no public exploit identified at time of analysis, EPSS risk is negligible (0.01%), and CISA SSVC rates exploitation as none but technical impact as total.
Missing hardware lock bit protection on NBIO registers in AMD EPYC server processors (7003/8004/9004/9005 series, including embedded variants) allows a local admin-privileged attacker to reconfigure MMIO routing, undermining SEV-SNP guest integrity guarantees. The vulnerability is significant in confidential computing contexts where SEV-SNP is deployed to protect tenant workloads from potentially malicious host operators - precisely the trust boundary AMD's hardware security feature is designed to enforce. No public exploit exists and EPSS (0.01%, 2nd percentile) combined with SSVC exploitation status of 'none' indicate negligible near-term mass exploitation risk; however, targeted abuse by privileged insiders or compromised hypervisor hosts is the realistic concern.
Kapsch TrafficCom RIS-9160 & RIS-9260 Roadside Units (RSUs) v3.2.0.829.23, v3.8.0.1119.42, and v4.6.0.1211.28 were discovered to lack SPI Protected Range Registers (PRRs), allowing attackers with. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Incorrect access control in the SPI Flash Chip of Kapsch TrafficCom RIS-9160 & RIS-9260 Roadside Units (RSUs) v3.2.0.829.23, v3.8.0.1119.42, and v4.6.0.1211.28 allows physically proximate attackers. Rated low severity (CVSS 3.5), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.