AMD Epyc Server Firmware vulnerabilities

3 CVEs affecting AMD Epyc Server Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2018-8936, published 2018-03-22.

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

• CVE-2018-8936, published 2018-03-22. Critical severity, CVSS 9.0. EPSS: 1.8% chance of exploitation in the next 30 days. The AMD EPYC Server, Ryzen, Ryzen Pro, and Ryzen Mobile processor chips allow Platform Security Processor (PSP) privilege escalation.
• CVE-2018-8930, published 2018-03-22. Critical severity, CVSS 9.0. EPSS: 1.8% chance of exploitation in the next 30 days. The AMD EPYC Server, Ryzen, Ryzen Pro, and Ryzen Mobile processor chips have insufficient enforcement of Hardware Validated Boot, aka MASTERKEY-1, MASTERKEY-2, and MASTERKEY-3.
• CVE-2018-8933, published 2018-03-22. Critical severity, CVSS 9.0. EPSS: 1.7% chance of exploitation in the next 30 days. The AMD EPYC Server processor chips have insufficient access control for protected memory regions, aka FALLOUT-1, FALLOUT-2, and FALLOUT-3.