7.8

CVE-2018-7789: schneider electric se modicon m221, all references, all versions prior to firmware v1.6.2.0

CVSS: 7.8v2.0HighModified
Published 29-08-2018Last modified 29-05-2026
Open JSON

Vulnerability summary

CVE-2018-7789 is a high (CVSS 7.8) vulnerability in schneider electric se modicon m221, all references, all versions prior to firmware v1.6.2.0. EPSS estimates a 2.80% chance of exploitation in the next 30 days, higher than 86.2% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
2.80%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 29-08-2018
    PublishedVulnerability first disclosed.
  2. 29-05-2026
    Last modifiedVulnerability information updated.

Description

An Improper Check for Unusual or Exceptional Conditions 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 remotely reboot Modicon M221 using crafted programing protocol frames.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

2.80%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

0.00 pp

From 2.80% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.80%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Schneider electric se1 product
Schneider-electric1 product

2 vendors · 2 products

References

3 links