CVE-2018-7798 | BDVDB-2026-109062 Detail

Schneider Electric SEModicon M221, All Versions

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.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact low. Attack vector: network.

Weaknesses#

CWE-345 Insufficient Verification of Data Authenticity

References#

Exploit#

No public exploit known

History#

Version 12018-11-02Record published in the CVE List.
Version 22026-05-29Most recent update recorded in the CVE List.

Published

Published: 2018-11-02
Last modified: 2026-05-29

Vendor information

Vendor: Schneider Electric SE
Product: Modicon M221, All Versions

All Schneider Electric SE vulnerabilities

Score

8.2 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 51.7.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Modicon M221, All Versions
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.2 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	High
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).