CVE-2021-22283: Abb EVD4 Firmware

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Improper Initialization vulnerability in ABB Relion protection relays - 611 series, ABB Relion protection relays - 615 series IEC 4.0 FP1, ABB Relion protection relays - 615 series CN 4.0 FP1, ABB Relion protection relays - 615 series IEC 5.0, ABB Relion protection relays - 615 series IEC 5.0 FP1, ABB Relion protection relays - 620 series IEC/CN 2.0, ABB Relion protection relays - 620 series IEC/CN 2.0 FP1, ABB Relion protection relays - REX640 PCL1, ABB Relion protection relays - REX640 PCL2, ABB Relion protection relays - REX640 PCL3, ABB Relion protection relays - RER615, ABB Remote Monitoring and Control - REC615, ABB Merging Unit- SMU615 allows Communication Channel Manipulation.This issue affects Relion protection relays - 611 series: from 1.0.0 before 2.0.3; Relion protection relays - 615 series IEC 4.0 FP1: from 4.1.0 before 4.1.9; Relion protection relays - 615 series CN 4.0 FP1: from 4.1.0 before 4.1.8; Relion protection relays - 615 series IEC 5.0: from 5.0.0 before 5.0.12; Relion protection relays - 615 series IEC 5.0 FP1: from 5.1.0 before 5.1.20; Relion protection relays - 620 series IEC/CN 2.0: from 2.0.0 before 2.0.11; Relion protection relays - 620 series IEC/CN 2.0 FP1: from 2.1.0 before 2.1.15; Relion protection relays - REX640 PCL1: from 1.0.0 before 1.0.8; Relion protection relays - REX640 PCL2: from 1.1.0 before 1.1.4; Relion protection relays - REX640 PCL3: from 1.2.0 before 1.2.1; Relion protection relays - RER615: from 2.0.0 before 2.0.3; Remote Monitoring and Control - REC615: from 1.0.0 before 2.0.3; Merging Unit- SMU615: from 1.0.0 before 1.0.2.

Affected products

  • Abb EVD4 Firmware: any version
  • Abb REC615 Firmware: before 2.0.3 (fixed in 2.0.3)
  • Abb RED615 Iec Firmware: any version
  • Abb REF615 Ansi Firmware: any version
  • Abb REF615 Iec Firmware: any version
  • Abb REF615R Firmware: any version
  • Abb Relion 611 Firmware: before 2.0.3 (fixed in 2.0.3)
  • Abb Relion 615 Ansi Firmware: any version
  • Abb Relion 615 Cn Firmware: any version; before 4.1.8 (fixed in 4.1.8)
  • Abb Relion 615 Iec Firmware: any version; before 4.1.9 (fixed in 4.1.9); before 5.0.12 (fixed in 5.0.12); before 5.1.20 (fixed in 5.1.20)
  • Abb Relion 620 Ansi Firmware: any version
  • Abb Relion 620 Cn Firmware: before 2.0.11 (fixed in 2.0.11); before 2.1.15 (fixed in 2.1.15)
  • Abb Relion 620 Iec Firmware: before 2.0.11 (fixed in 2.0.11); before 2.1.15 (fixed in 2.1.15)
  • Abb RER615 Firmware: before 2.0.3 (fixed in 2.0.3)
  • Abb RER620 Firmware: any version
  • Abb REX640 PCL1 Firmware: before 1.0.8 (fixed in 1.0.8)
  • 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)
  • Abb SMU615 Firmware: before 1.0.2 (fixed in 1.0.2)

Published 2023-02-28. Last modified 2026-06-17.