CVE-2018-7791

9.8 CRITICAL
Published: August 29, 2018 Modified: May 29, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.securityfocus.com/bid/105182
Source: cybersecurity@se.com
Third Party Advisory VDB Entry
https://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/
Source: cybersecurity@se.com
Mitigation Vendor Advisory
http://www.securityfocus.com/bid/105182
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/
Source: af854a3a-2127-422b-91ae-364da2661108
Mitigation Vendor Advisory

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
1.9%
77th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

schneider-electric