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CVE-2018-7794

HIGHCVSS 7.5/10EPSS 1.40%

Last modified

CVE-2018-7794 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when reading data with invalid index using Modbus TCP.. EPSS estimates a 1.40% chance of exploitation in the next 30 days.

Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when reading data with invalid index using Modbus TCP.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
1.40%

69.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Schneider-ElectricModicon M580 Firmware< 2.80
Schneider-ElectricModicon M340 Firmware< 3.01
Schneider-ElectricTsxh5744m Firmware< 3.20
Schneider-ElectricTsxh5724m Firmware< 3.20
Schneider-ElectricTsxp576634m Firmware< 3.20
Schneider-ElectricTsxp57554m Firmware< 3.20
Schneider-ElectricTsxp575634m Firmware< 3.20
Schneider-ElectricTsxp57454m Firmware< 3.20
Schneider-ElectricTsxp574634m Firmware< 3.20
Schneider-ElectricTsxp57354m Firmware< 3.20
Schneider-ElectricTsxp573634m Firmware< 3.20
Schneider-ElectricTsxp57304m Firmware< 3.20
Schneider-ElectricTsxp57254m Firmware< 3.20
Schneider-ElectricTsxp572634m Firmware< 3.20
Schneider-ElectricTsxp57204m Firmware< 3.20
Schneider-ElectricTsxp571634m Firmware< 3.20
Schneider-ElectricTsxp57154m Firmware< 3.20
Schneider-ElectricTsxp57104m Firmware< 3.20
Schneider-Electric140cpu65150 Firmware< 3.52
Schneider-Electric140cpu65160 Firmware< 3.52
Schneider-Electric140cpu65260 Firmware< 3.52
Schneider-Electric140cpu67261 Firmware< 3.52
Schneider-Electric140cpu67060 Firmware< 3.52
Schneider-Electric140cpu67160 Firmware< 3.52
Schneider-Electric140cpu67260 Firmware< 3.52
Schneider-Electric140cpu65860 Firmware< 3.52
Schneider-Electric140cpu67861 Firmware< 3.52
Schneider-Electric140cpu65160s Firmware< 3.52
Schneider-Electric140cpu67160s Firmware< 3.52

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-7794?
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when reading data with invalid index using Modbus TCP.
How severe is CVE-2018-7794?
CVE-2018-7794 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.40% probability of exploitation in the next 30 days.
How do I fix CVE-2018-7794?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-7794?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST