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CVE-2020-7477

HIGHCVSS 7.5/10EPSS 1.28%

Last modified

CVE-2020-7477 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 Quantum Ethernet Network module 140NOE771x1 (Versions 7.0 and prior), Quantum processors with integrated Ethernet – 140CPU65xxxxx (all Versions), and Premium processors with integrated Ethernet (all Versions), which could cause a Denial of Service when sending a specially crafted command over Modbus.. EPSS estimates a 1.28% chance of exploitation in the next 30 days.

Description

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Quantum Ethernet Network module 140NOE771x1 (Versions 7.0 and prior), Quantum processors with integrated Ethernet – 140CPU65xxxxx (all Versions), and Premium processors with integrated Ethernet (all Versions), which could cause a Denial of Service when sending a specially crafted command over Modbus.

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
1.28%

66.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Schneider-Electric140noe77101 Firmware<= 7.0
Schneider-Electric140noe77111 Firmware<= 7.0
Schneider-ElectricTsxh5744m FirmwareAll versions
Schneider-ElectricTsxh5724m FirmwareAll versions
Schneider-ElectricTsxp576634m FirmwareAll versions
Schneider-ElectricTsxp57554m FirmwareAll versions
Schneider-ElectricTsxp575634m FirmwareAll versions
Schneider-ElectricTsxp57454m FirmwareAll versions
Schneider-ElectricTsxp574634m FirmwareAll versions
Schneider-ElectricTsxp573634m FirmwareAll versions
Schneider-ElectricTsxp57304m FirmwareAll versions
Schneider-ElectricTsxp57254m FirmwareAll versions
Schneider-ElectricTsxp572634m FirmwareAll versions
Schneider-ElectricTsxp57204m FirmwareAll versions
Schneider-ElectricTsxp571634m FirmwareAll versions
Schneider-ElectricTsxp57154m FirmwareAll versions
Schneider-ElectricTsxp57104m FirmwareAll versions
Schneider-Electric140cpu65150 FirmwareAll versions
Schneider-Electric140cpu65160 FirmwareAll versions
Schneider-Electric140cpu65260 FirmwareAll versions
Schneider-Electric140cpu67261 FirmwareAll versions
Schneider-Electric140cpu67060 FirmwareAll versions
Schneider-Electric140cpu67160 FirmwareAll versions
Schneider-Electric140cpu67260 FirmwareAll versions
Schneider-Electric140cpu65860 FirmwareAll versions
Schneider-Electric140cpu67861 FirmwareAll versions
Schneider-Electric140cpu65160s FirmwareAll versions
Schneider-Electric140cpu67160s FirmwareAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-7477?
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Quantum Ethernet Network module 140NOE771x1 (Versions 7.0 and prior), Quantum processors with integrated Ethernet – 140CPU65xxxxx (all Versions), and Premium processors with integrated Ethernet (all Versions), which could cause a Denial of Service when sending a specially crafted command over Modbus.
How severe is CVE-2020-7477?
CVE-2020-7477 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.28% probability of exploitation in the next 30 days.
How do I fix CVE-2020-7477?
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.

How Strix Helps

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Source: NVD / NIST