How severe is CVE-2018-7798?

CVE-2018-7798 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2018-7798 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7798?

CVE-2018-7798 affects Schneider-electric Somachine Basic. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-7798?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-7798 published?

CVE-2018-7798 was published on 2018-11-02 and last updated on 2026-06-17.

CVE-2018-7798

CVE-2018-7798 is a high-severity vulnerability in Schneider-electric Somachine Basic with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v2: 6.4
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Schneider-electric Somachine Basic
Published: 2018-11-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-7798?: 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.
How severe is CVE-2018-7798?: CVE-2018-7798 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2018-7798 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7798?: CVE-2018-7798 affects Schneider-electric Somachine Basic. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-7798?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-7798 published?: CVE-2018-7798 was published on 2018-11-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:schneider-electric:somachine_basic:*:*:*:*:*:*:*:*

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