What’s Vulnerable › Vulnerabilities

CVE-2022-1596: ABB Relion REX640 Insufficient file access control

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-21 · updated 2026-06-17
• Weakness: CWE-732

Description

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: through 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

How to fix

Upgrade to a fixed version: ABB Rex640 Pcl2 Firmware 1.1.4; ABB Rex640 Pcl3 Firmware 1.2.1. Check the vendor advisory for mitigations.

References

• https://search.abb.com/library/Download.aspx?DocumentID=2NGA001421
• https://search.abb.com/library/Download.aspx?DocumentID=2NGA001421

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