An Information Management Error vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows unauthorized users to replay authentication sequences. If an attacker exploits this vulnerability and connects to a Modicon M221, the attacker can upload the original program from the PLC.
History

Fri, 29 May 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


cve-icon MITRE

Status: PUBLISHED

Assigner: schneider

Published: 2018-08-29T21:00:00.000Z

Updated: 2026-05-29T13:55:56.843Z

Reserved: 2018-03-08T00:00:00.000Z

Link: CVE-2018-7790

cve-icon Vulnrichment

Updated: 2024-08-05T06:37:59.565Z

cve-icon NVD

Status : Modified

Published: 2018-08-29T21:29:01.070

Modified: 2026-05-29T15:16:16.280

Link: CVE-2018-7790

cve-icon Redhat

No data.