Permissions and Access Control Flaw in Schneider Electric Modicon M221
CVE-2018-7791

9.8CRITICAL

Key Information:

Vendor
Schneider Electric
Status
Modicon M221, All References, All Versions Prior To Firmware V1.6.2.0
Vendor
CVE Published:
29 August 2018

Summary

A vulnerability in Schneider Electric's Modicon M221 product allows unauthorized users to overwrite original passwords with their own, facilitating potential exploitation. An attacker leveraging this flaw can overwrite critical password data, enabling them to upload the original program from the programmable logic controller (PLC) and compromise system integrity. This issue affects all versions prior to firmware V1.6.2.0, making it essential for users to apply the necessary firmware updates to secure their systems.

Affected Version(s)

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

References

http://www.securityfocus.com/bid/105182
vdb-entryx_refsource_BID
https://www.schneider-electric.com/en/download/document/S...
x_refsource_CONFIRM

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.