Lenovo Thinkpad x1 Carbon 8th Gen Firmware vulnerabilities

4 CVEs affecting Lenovo Thinkpad x1 Carbon 8th Gen Firmware, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2022-4574, published 2023-10-30.

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

• CVE-2022-40134, published 2023-01-30. Medium severity, CVSS 4.4. EPSS: 0.2% chance of exploitation in the next 30 days. An information leak vulnerability in the SMI Set BIOS Password SMI Handler in some Lenovo models may allow an attacker with local access and elevated privileges to read SMM memory.
• CVE-2022-48189, published 2023-10-30. Medium severity, CVSS 6.7. EPSS: 0.2% chance of exploitation in the next 30 days. An SMM driver input validation vulnerability in the BIOS of some ThinkPad models could allow an attacker with local access and elevated privileges to execute arbitrary code.
• CVE-2022-4574, published 2023-10-30. Medium severity, CVSS 6.7. EPSS: 0.2% chance of exploitation in the next 30 days. An SMI handler input validation vulnerability in the BIOS of some ThinkPad models could allow an attacker with local access and elevated privileges to execute arbitrary code.  
• CVE-2023-2290, published 2023-06-26. Medium severity, CVSS 6.7. EPSS: 0.2% chance of exploitation in the next 30 days. A potential vulnerability in the LenovoFlashDeviceInterface SMI handler may allow an attacker with local access and elevated privileges to execute arbitrary code.