CVE-2021-22283

mediumpriority · track · 22EPSS 0.002 · 6 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.17% (6th) EPSS

CVSS 5.5 · medium

Is it mine?

64 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

6.2

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.16.2mediumAV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16.2mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.2mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · cybersecurity@ch.abb.comexploitability 2.5 · impact 3.6

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-665USprimaryCWE-665US

affected products (64)

Products and version ranges known to be affected.

Hitachi Energy Relionall versionscert_bundDEcpe:/h:abb:relion:-
ABB Merging Unit- SMU6151.0.0 → 1.0.2enisa_euvdEU
ABB Relion protection relays - 611 series1.0.0 → 2.0.3enisa_euvdEU
ABB Relion protection relays - 615 series CN 4.0 FP14.1.0 → 4.1.8enisa_euvdEU
ABB Relion protection relays - 615 series IEC 4.0 FP14.1.0 → 4.1.9enisa_euvdEU
ABB Relion protection relays - 615 series IEC 5.05.0.0 → 5.0.12enisa_euvdEU
ABB Relion protection relays - 615 series IEC 5.0 FP15.1.0 → 5.1.20enisa_euvdEU
ABB Relion protection relays - 620 series IEC/CN 2.02.0.0 → 2.0.11enisa_euvdEU
ABB Relion protection relays - 620 series IEC/CN 2.0 FP12.1.0 → 2.1.15enisa_euvdEU
ABB Relion protection relays - RER6152.0.0 → 2.0.3enisa_euvdEU
ABB Relion protection relays - REX640 PCL11.0.0 → 1.0.8enisa_euvdEU
ABB Relion protection relays - REX640 PCL21.1.0 → 1.1.4enisa_euvdEU
ABB Relion protection relays - REX640 PCL31.2.0 → 1.2.1enisa_euvdEU
ABB Remote Monitoring and Control - REC6151.0.0 → 2.0.3enisa_euvdEU
ABB ABB REC615≤ 2.0.3fstec_bduRU
ABB ABB Relion 611≤ 2.0.3fstec_bduRU
ABB ABB Relion 615 series ANSIall versionsfstec_bduRU
ABB ABB Relion 615 series ANSI FP1all versionsfstec_bduRU
ABB ABB Relion 615 series ANSI FP2all versionsfstec_bduRU
ABB ABB Relion 615 series CNall versionsfstec_bduRU

showing 20 of 64

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0489Hitachi Energy Relion: Schwachstelle ermöglicht Denial of ServiceDeutsch2023-02-27csaf · cert_bundDE
Ein lokaler Angreifer kann eine Schwachstelle in Hitachi Energy Relion ausnutzen, um einen Denial of Service Angriff durchzuführen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2023-02-28modified 2026-06-17

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references (4)

External citations — patches, advisories, analysis.

scry

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