6.5

CVE-2019-6821: schneider-electric modicon_m580_firmware Use of Insufficiently Random Values

CVSS: 6.5v3.1MediumModified
Published 22-05-2019Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2019-6821 is a medium (CVSS 6.5) Use of Insufficiently Random Values vulnerability in schneider-electric modicon_m580_firmware. EPSS estimates a 1.93% chance of exploitation in the next 30 days, higher than 79.8% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
1.93%
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. 22-05-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

CWE-330: Use of Insufficiently Random Values vulnerability, which could cause the hijacking of the TCP connection when using Ethernet communication in Modicon M580 firmware versions prior to V2.30, and all firmware versions of Modicon M340, Modicon Premium, Modicon Quantum.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.93%

Chance of exploitation in the next 30 days

Percentile

80%

Versus all other CVEs

30-day change

0.00 pp

From 1.93% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.93%

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-electric1 product

1 vendor · 1 product

References

3 links