CVE-2018-7791 - CVE House
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Status published Unknown CVE-2018-7791

A Permissions, Privileges, and Access Control vulnerability exists in Schneider...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Schneider Electric SE

View all reports →

Affected Software

Modicon M221, all references, all versions prior to firmware V1.6.2.0
Vulnerable Versions:
Modicon M221, all references, all versions prior to firmware V1.6.2.0

Timeline

Official Publish: August 29th, 2018
Last Modified: May 29th, 2026
Added to House: July 20th, 2026

CVSS Vectors

No vector data available

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.