How severe is CVE-2019-6833?

CVE-2019-6833 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-6833 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6833?

CVE-2019-6833 primarily affects Schneider-electric Hmigto Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6833?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-6833 published?

CVE-2019-6833 was published on 2019-09-17 and last updated on 2026-06-17.

CVE-2019-6833

CVE-2019-6833 is a medium-severity vulnerability in Schneider-electric Hmigto Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-754.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-754
Affected product: Schneider-electric Hmigto Firmware
Published: 2019-09-17
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2019-6833?: 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.
How severe is CVE-2019-6833?: CVE-2019-6833 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-6833 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6833?: CVE-2019-6833 primarily affects Schneider-electric Hmigto Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6833?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-6833 published?: CVE-2019-6833 was published on 2019-09-17 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:o:schneider-electric:hmigto_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:hmisto_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:xbtgh_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:schneider-electric:hmigtu_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:hmiscu_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:hmistu_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:xbtgt_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:hmigxo_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:hmigxu_firmware:-:*:*:*:*:*:*:*

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