9.8

CVE-2012-0931: schneider-electric modicon_quantum_plc Improper Authentication

CVSS: 9.8v3.1CriticalModified
Published 28-01-2012Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2012-0931 is a critical (CVSS 9.8) Improper Authentication vulnerability in schneider-electric modicon_quantum_plc. EPSS estimates a 4.82% chance of exploitation in the next 30 days, higher than 91.9% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
4.82%
0%100%
Low · -0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 28-01-2012
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

Schneider Electric Modicon Quantum PLC does not perform authentication between the Unity software and PLC, which allows remote attackers to cause a denial of service or possibly execute arbitrary code via unspecified vectors.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

4.82%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

-0.04 pp

From 4.86% on 22-09-2026

22-09-202622-10-2026
EPSS score
4.82%

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

5 links