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Fencer Vulns
high 7.3

CVE-2019-6855 json

Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions),…

published 2020-01-06 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16409

cvss
7.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

Incorrect Authorization vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10), which could cause a bypass of the authentication process between EcoStruxure Control Expert and the M340 and M580 controllers.

Patch / fix

  • schneider-electric ecostruxure_control_expert 14.1
  • schneider-electric modicon_m580_bmep584040_firmware 3.10
  • schneider-electric modicon_m580_bmeh584040_firmware 3.10
  • schneider-electric modicon_m580_bmep586040_firmware 3.10
  • schneider-electric modicon_m580_bmeh586040_firmware 3.10
  • schneider-electric modicon_m580_bmep581020_firmware 3.10
  • schneider-electric modicon_m580_bmep582020_firmware 3.10
  • schneider-electric modicon_m580_bmep582040_firmware 3.10
  • schneider-electric modicon_m580_bmep583020_firmware 3.10
  • schneider-electric modicon_m580_bmep583040_firmware 3.10
  • schneider-electric modicon_m580_bmep584020_firmware 3.10
  • schneider-electric modicon_m580_bmep585040_firmware 3.10
  • schneider-electric modicon_m580_bmeh582040_firmware 3.10
  • schneider-electric modicon_m580_bmep584040s_firmware 3.10
  • schneider-electric modicon_m580_bmeh584040s_firmware 3.10
  • schneider-electric modicon_m580_bmeh586040s_firmware 3.10
  • schneider-electric modicon_m580_bmep582040s_firmware 3.10
  • schneider-electric modicon_m340_bmxp3420302_firmware 3.20
  • schneider-electric modicon_m340_bmxp342020_firmware 3.20
  • schneider-electric modicon_m340_bmxp342000_firmware 3.20

Exploit prediction

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20) , and Modicon M580 (all versions prior to V3.10)

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.