CVE-2021-42848: Lenovo a1 Firmware

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

An information disclosure vulnerability was reported in some Lenovo Personal Cloud Storage devices that could allow an unauthenticated user to retrieve device and networking details.

Affected products

• Lenovo a1 Firmware: before 5.3.6.a1 (fixed in 5.3.6.a1)
• Lenovo t1 Firmware: before 5.3.6.t1 (fixed in 5.3.6.t1)
• Lenovo t2 Firmware: before 5.3.8.t2 (fixed in 5.3.8.t2)
• Lenovo t2pro Firmware: before 5.3.7.t2-pro (fixed in 5.3.7.t2-pro)
• Lenovo x1 Firmware: before 5.3.8.x1 (fixed in 5.3.8.x1)

Published 2022-05-18. Last modified 2026-06-17.