CVE-2018-7791

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

A Permissions, Privileges, and Access Control 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 overwrite the original password with their password. If an attacker exploits this vulnerability and overwrite the password, the attacker can upload the original program from the PLC.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-287CWE-284

Affected software

No affected versions have been published.

Timeline

Published
Aug 29, 2018
Last modified
Jun 17, 2026
NVD status
Modified

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