Home/CVE/A Permissions, Privileges, and Access Control vulnerability exists in Schneider Electric's Modicon M221 product (all ref
CVE

CVE-2018-7791

A Permissions, Privileges, and Access Control vulnerability exists in Schneider Electric's Modicon M221 product (all ref

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.

CRITICAL · CVSS 9.8 EPSS 0.00354
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
▤

Affected Products & Versions

1
schneider-electric modicon m221 firmware< 1.6.2.0
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cybersecurity@se.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Aug 2018 · 09:29 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-OT-white-2018-icsa-18-240-01
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/105182Third Party AdvisoryVDB Entry
https://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/MitigationVendor Advisory
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