7.5

CVE-2018-7857: schneider-electric modicon_m340_firmware

CVSS: 7.5v3.1HighModified
Published 22-05-2019Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-7857 is a high (CVSS 7.5) vulnerability in schneider-electric modicon_m340_firmware. EPSS estimates a 1.58% chance of exploitation in the next 30 days, higher than 75.1% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
40/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
1.58%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 22-05-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible Denial of Service when writing out of bounds variables to the controller over Modbus.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.58%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

0.00 pp

From 1.58% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.58%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (talosintelligence.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Schneider-electric4 products

1 vendor · 4 products

References

2 links