CVE-2018-7798

HIGHNVD 8.28.2—Trending — 3 sources updated this week

8.2

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.

CVSS v3: 8.2
EG Score: 8.2(medium)
EPSS: 36.3%
KEV: Not listed

Published

November 2, 2018

Last Modified

May 29, 2026

References (4)

cybersecurity@sehttp://www.securityfocus.com/bid/105970
cybersecurity@sehttps://www.schneider-electric.com/en/download/document/SEVD-2018-270-01/
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/105970
af854a3a-2127-422b-91ae-364da2661108https://www.schneider-electric.com/en/download/document/SEVD-2018-270-01/

Vendor Advisories for CVE-2018-7798(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

GHSA-wcc5-wx82-x4gx
GitHub Security AdvisoriesHigh
A Insufficient Verification of Data Authenticity (CWE-345) vulnerability exists in the Modicon...

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-345Insufficient Verification of Data Authenticity

Data Freshness Timeline

(refreshed 11× in last 7d / 16× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 01:27 UTCEG score recompute
2026-05-28 01:27 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-7798?

CVE-2018-7798 is a high vulnerability published on November 2, 2018. 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.

When was CVE-2018-7798 disclosed?

CVE-2018-7798 was first published in the National Vulnerability Database on November 2, 2018, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-7798 actively exploited?

CVE-2018-7798 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-7798?

CVE-2018-7798 has a CVSS v3 base score of 8.2 (NVD).

How do I remediate CVE-2018-7798?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-7798, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2018-7798

📅 Published

🔄 Last Modified

🔗 References (4)

📣 Vendor Advisories for CVE-2018-7798(1)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)