Lenovo Thinkpad s3 Gen 2 Firmware vulnerabilities

3 CVEs affecting Lenovo Thinkpad s3 Gen 2 Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2020-8336, published 2020-06-09.

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

• CVE-2020-8323, published 2020-06-09. Medium severity, CVSS 6.7. EPSS: 0.3% chance of exploitation in the next 30 days. A potential vulnerability in the SMI callback function used in the Legacy SD driver in some Lenovo ThinkPad, ThinkStation, and Lenovo Notebook models may allow arbitrary code execution.
• CVE-2020-8336, published 2020-06-09. Medium severity, CVSS 6.8. EPSS: 0.3% chance of exploitation in the next 30 days. Lenovo implemented Intel CSME Anti-rollback ARB protections on some ThinkPad models to prevent roll back of CSME Firmware in flash.
• CVE-2020-8320, published 2020-06-09. Medium severity, CVSS 6.8. EPSS: 0.3% chance of exploitation in the next 30 days. An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege.