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CVE-2018-7798

HIGH
8.2
CVSS Score
Published: November 2, 2018 at 05:00 PM UTC
Updated: June 17, 2026 at 02:03 AM UTC
3 products affected across 1 vendorSomachine BasicModicon M221SoMachine Basic

Using Modicon M221, All Versions by Schneider Electric SE?

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Severity
HIGH8.2
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

A Insufficient Verification of Data Authenticity (CWE-345) vulnerability exists in the Modicon M221, all versions, which could cause a change of IPv4 configuration (IP address, mask and gateway) when remotely connected to the device.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Somachine Basic· Schneider Electric
95%
All versions
schneider-electric-modicon-m221 (environment)
SoMachine Basic· Schneider Electric
60%
All versions
Modicon M221· Schneider Electricdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/105970
x_refsource_CONFIRMMitigationVendor Advisory
Source: [email protected]
https://www.schneider-electric.com/en/download/document/SEVD-2018-270-01/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-345

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