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.

Project Subscriptions

Vendors Products
Schneider-electric Subscribe
Modicon M221 Subscribe
Modicon M221 Firmware Subscribe
Advisories
Source ID Title
EUVD EUVD EUVD-2018-19502 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

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'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: schneider

Published:

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.

cve-icon OpenCVE Enrichment

No data.

Weaknesses