CVE-2018-7791 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/105182 https://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8