CVE-2021-22283 - CVE House
Back to Database
Status published Medium CVE-2021-22283

MMS File Transfer Vulnerability impact on Distribution Automation products

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-22283

Credits & Attribution

No credits recorded in the NVD database.

References

More from ABB

View All →
CVE-2025-9970
Application credential stored in clear text in memory
Medium 5.7
CVE-2025-9574
Missing Authentication Vulnerability
Critical 9.9
CVE-2025-8754
ABB AbilityTM zenon Remote Transport Vulnerability
High 8.7
CVE-2025-7745
Modbus TCP buffer overread
Medium 6.9
CVE-2025-7705
Authentication bypass due to compatibility mode enabled by default
High 8.6

Affected Vendor

Affected Software

Relion protection relays - 611 series, Relion protection relays - 615 series IEC 4.0 FP1, Relion protection relays - 615 series CN 4.0 FP1, Relion protection relays - 615 series IEC 5.0, Relion protection relays - 615 series IEC 5.0 FP1, Relion protection relays - 620 series IEC/CN 2.0, Relion protection relays - 620 series IEC/CN 2.0 FP1, Relion protection relays - REX640 PCL1, Relion protection relays - REX640 PCL2, Relion protection relays - REX640 PCL3, Relion protection relays - RER615, Remote Monitoring and Control - REC615, Merging Unit- SMU615
Vulnerable Versions:
1.0.0, 4.1.0, 5.0.0, 5.1.0, 2.0.0, 2.1.0, 1.1.0, 1.2.0

Timeline

Official Publish: February 28th, 2023
Last Modified: March 7th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-665

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.