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Fencer Vulns
medium 6.5

CVE-2019-6833 json

A CWE-754 – Improper Check for Unusual or Exceptional Conditions vulnerability exists in Magelis HMI Panels (all versions of - HMIGTO, HMIS…

published 2019-09-17 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16387

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

A CWE-754 – Improper Check for Unusual or Exceptional Conditions vulnerability exists in Magelis HMI Panels (all versions of - HMIGTO, HMISTO, XBTGH, HMIGTU, HMIGTUX, HMISCU, HMISTU, XBTGT, XBTGT, HMIGXO, HMIGXU), which could cause a temporary freeze of the HMI when a high rate of frames is received. When the attack stops, the buffered commands are processed by the HMI panel.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-20-044-02 updated cvss 7.4

Schneider Electric Magelis HMI Panels

  • Schneider Electric Software, LLC Magelis HMIGTO series Schneider Electric Software, LLC Magelis HMIGTU series Schneider Electric Software, LLC Magelis HMIGTUX series Schneider Electric Software, LLC Magelis HMIGXO series Schneider Electric Software, LLC Magelis HMIGXU series Schneider Electric Software, LLC Magelis HMISCU series
    +5 more products
    Schneider Electric Software, LLC Magelis HMISTO series Schneider Electric Software, LLC Magelis HMISTU series Schneider Electric Software, LLC Magelis XBTGC series Schneider Electric Software, LLC Magelis XBTGH series Schneider Electric Software, LLC Magelis XBTGT series
    affected: mitigation “For more information, see the Schneider Electric security notification.” schneider-electric.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
13 mo ago

Exploit prediction

1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

  • Schneider Electric SE Magelis HMI Panels

Classification

Weakness
  • CWE-754 Improper Check for Unusual or Exceptional Conditions

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.