Lenovo Thinkpad x390 (20sx) Firmware vulnerabilities

2 CVEs affecting Lenovo Thinkpad x390 (20sx) Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2020-8341, published 2020-09-01.

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

• CVE-2020-8341, published 2020-09-01. Low severity, CVSS 2.4. EPSS: 0.3% chance of exploitation in the next 30 days. In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range…
• 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.