CVE-2022-4574: Lenovo Thinkpad l14 Firmware

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.  

Affected products

• Lenovo Thinkpad l14 Firmware: before 1.20 (fixed in 1.20)
• Lenovo Thinkpad l14 Gen 2 Firmware: affected versions not specified
• Lenovo Thinkpad l15 Firmware: before 1.20 (fixed in 1.20)
• Lenovo Thinkpad l15 Gen 2 Firmware: affected versions not specified
• Lenovo Thinkpad p14s Gen 1 Firmware: before 1.28 (fixed in 1.28)
• Lenovo Thinkpad p14s Gen 2 Firmware: affected versions not specified
• Lenovo Thinkpad p14s Gen 3 Firmware: before 1.31 (fixed in 1.31)
• Lenovo Thinkpad p15 Gen 1 Firmware: before 1.32 (fixed in 1.32)
• Lenovo Thinkpad p15 Gen 2 Firmware: before 1.25 (fixed in 1.25)
• Lenovo Thinkpad p15s Gen 1 Firmware: before 1.28 (fixed in 1.28)
• Lenovo Thinkpad p15s Gen 2 Firmware: affected versions not specified
• Lenovo Thinkpad p15v Gen 1 Firmware: before 1.32 (fixed in 1.32)
• Lenovo Thinkpad p15v Gen 2 Firmware: before 1.19 (fixed in 1.19)
• Lenovo Thinkpad p15v Gen 3 Firmware: before 1.15 (fixed in 1.15)
• Lenovo Thinkpad p16 Gen 1 Firmware: before 1.17 (fixed in 1.17)
• Lenovo Thinkpad p16s Gen 1 Firmware: before 1.31 (fixed in 1.31)
• Lenovo Thinkpad p17 Gen 1 Firmware: before 1.32 (fixed in 1.32)
• Lenovo Thinkpad p17 Gen 2 Firmware: before 1.25 (fixed in 1.25)
• Lenovo Thinkpad p1 Gen 3 Firmware: before 1.27 (fixed in 1.27)
• Lenovo Thinkpad p1 Gen 4 Firmware: version 1.22 only
• Lenovo Thinkpad p1 Gen 5 Firmware: before 1.16 (fixed in 1.16)
• Lenovo Thinkpad t14 Gen 1 Firmware: before 1.28 (fixed in 1.28)
• Lenovo Thinkpad t14 Gen 2 Firmware: affected versions not specified
• Lenovo Thinkpad t14 Gen 3 Firmware: before 1.31 (fixed in 1.31)
• Lenovo Thinkpad t14s Firmware: before 1.26 (fixed in 1.26)
• and 29 more

Published 2023-10-30. Last modified 2026-06-17.