CVE-2022-1596: Abb REX640 PCL1 Firmware

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Incorrect Permission Assignment for Critical Resource vulnerability in ABB REX640 PCL1, REX640 PCL2, REX640 PCL3 allows an authenticated attacker to launch an attack against the user database file and try to take control of an affected system node.

Affected products

• Abb REX640 PCL1 Firmware: up to and including 1.0.7
• Abb REX640 PCL2 Firmware: before 1.1.4 (fixed in 1.1.4)
• Abb REX640 PCL3 Firmware: before 1.2.1 (fixed in 1.2.1)

Published 2022-06-21. Last modified 2026-06-17.