CVE-2021-22779

Published Jul 14, 2021 CVSS 3.1 · 6.5 Medium EPSS 1.1% KEV · Not listed
Description
Authentication Bypass by Spoofing vulnerability exists in EcoStruxure Control Expert (all versions prior to V15.0 SP1, including all versions of Unity Pro), EcoStruxure Control Expert V15.0 SP1, EcoStruxure Process Expert (all versions, including all versions of EcoStruxure Hybrid DCS), SCADAPack RemoteConnect for x70 (all versions), Modicon M580 CPU (all versions - part numbers BMEP* and BMEH*), Modicon M340 CPU (all versions - part numbers BMXP34*), that could cause unauthorized access in read and write mode to the controller by spoofing the Modbus communication between the engineering software and the controller.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-9914 Authentication Bypass by Spoofing vulnerability exists in EcoStruxure Control Expert (all versions prior to V15.0 SP1, including all versions of Unity Pro), EcoStruxure Control Expert V15.0 SP1, EcoStruxure Process Expert (all versions, including all versions of EcoStruxure Hybrid DCS), SCADAPack RemoteConnect for x70 (all versions), Modicon M580 CPU (all versions - part numbers BMEP* and BMEH*), Modicon M340 CPU (all versions - part numbers BMXP34*), that could cause unauthorized access in read and write mode to the controller by spoofing the Modbus communication between the engineering software and the controller.
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'}

Subscriptions

Schneider-electric Ecostruxure Control Expert Ecostruxure Process Expert Modicon M340 Bmxp341000 Modicon M340 Bmxp341000 Firmware Modicon M340 Bmxp342010 Modicon M340 Bmxp342010 Firmware Modicon M340 Bmxp342020 Modicon M340 Bmxp342020 Firmware Modicon M340 Bmxp342030 Modicon M340 Bmxp342030 Firmware Modicon M580 Bmeh582040 Modicon M580 Bmeh582040 Firmware Modicon M580 Bmeh582040c Modicon M580 Bmeh582040c Firmware Modicon M580 Bmeh582040s Modicon M580 Bmeh582040s Firmware Modicon M580 Bmeh584040 Modicon M580 Bmeh584040 Firmware Modicon M580 Bmeh584040c Modicon M580 Bmeh584040c Firmware Modicon M580 Bmeh584040s Modicon M580 Bmeh584040s Firmware Modicon M580 Bmeh586040 Modicon M580 Bmeh586040 Firmware Modicon M580 Bmeh586040c Modicon M580 Bmeh586040c Firmware Modicon M580 Bmeh586040s Modicon M580 Bmeh586040s Firmware Modicon M580 Bmep581020 Modicon M580 Bmep581020 Firmware Modicon M580 Bmep581020h Modicon M580 Bmep581020h Firmware Modicon M580 Bmep582020 Modicon M580 Bmep582020 Firmware Modicon M580 Bmep582020h Modicon M580 Bmep582020h Firmware Modicon M580 Bmep582040 Modicon M580 Bmep582040 Firmware Modicon M580 Bmep582040h Modicon M580 Bmep582040h Firmware Modicon M580 Bmep582040s Modicon M580 Bmep582040s Firmware Modicon M580 Bmep583020 Modicon M580 Bmep583020 Firmware Modicon M580 Bmep583040 Modicon M580 Bmep583040 Firmware Modicon M580 Bmep584020 Modicon M580 Bmep584020 Firmware Modicon M580 Bmep584040 Modicon M580 Bmep584040 Firmware Modicon M580 Bmep584040s Modicon M580 Bmep584040s Firmware Modicon M580 Bmep585040 Modicon M580 Bmep585040 Firmware Modicon M580 Bmep585040c Modicon M580 Bmep585040c Firmware Modicon M580 Bmep586040 Modicon M580 Bmep586040 Firmware Modicon M580 Bmep586040c Modicon M580 Bmep586040c Firmware Remoteconnect
Weaknesses

Sources

Status
PUBLISHED
Assigner
schneider
Published
Updated
May 29, 2026, 1:50 PM
Reserved
Jan 6, 2021, 12:00 AM
Status
Modified
Published
Jul 14, 2021, 3:15 PM
Modified
Jun 17, 2026, 3:37 AM