CVE-2023-4818: Paxtechnology Paydroid

High severity, CVSS 7.6. EPSS: 0.7% chance of exploitation in the next 30 days.

PAX A920 device allows to downgrade bootloader due to a bug in its version check. The signature is correctly checked and only bootloader signed by PAX can be used.  The attacker must have physical USB access to the device in order to exploit this vulnerability.

Affected products

• Paxtechnology Paydroid: version 7.1.2_aquarius_11.1.50_20230614 only

Published 2024-01-15. Last modified 2026-06-17.