CVE-2020-14099: Mi AX1800 Firmware

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

On Xiaomi router AX1800 rom version < 1.0.336 and RM1800 root version < 1.0.26, the encryption scheme for a user's backup files uses hard-coded keys, which can expose sensitive information such as a user's password.

Affected products

• Mi AX1800 Firmware: before 1.0.336 (fixed in 1.0.336)
• Mi RM1800 Firmware: before 1.0.26 (fixed in 1.0.26)

Published 2021-04-08. Last modified 2026-06-17.