CVE-2020-7477
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Quantum...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-7477- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-754
- Updated
- 2026-11-02
CVE List
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.
- Record
CVE-2020-7477- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-754
- Updated
- 2026-11-02
EUVDEUVD-2020-28602
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.
- Record
EUVD-2020-28602- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-pf3g-p3qp-7mc8
A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Quantum...
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.
- Record
GHSA-pf3g-p3qp-7mc8- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-754
- Updated
- 2026-11-02
Affected products
- schneider-electric 140cpu65150 firmware
- schneider-electric 140cpu65160 firmware
- schneider-electric 140cpu65160s firmware
- schneider-electric 140cpu65260 firmware
- schneider-electric 140cpu65860 firmware
- schneider-electric 140cpu67060 firmware
- schneider-electric 140cpu67160 firmware
- schneider-electric 140cpu67160s firmware
- schneider-electric 140cpu67260 firmware
- schneider-electric 140cpu67261 firmware
- schneider-electric 140cpu67861 firmware
- schneider-electric 140noe77101 firmware
Show 16 moreShow less
- schneider-electric 140noe77111 firmware
- schneider-electric tsxh5724m firmware
- schneider-electric tsxh5744m firmware
- schneider-electric tsxp57104m firmware
- schneider-electric tsxp57154m firmware
- schneider-electric tsxp571634m firmware
- schneider-electric tsxp57204m firmware
- schneider-electric tsxp57254m firmware
- schneider-electric tsxp572634m firmware
- schneider-electric tsxp57304m firmware
- schneider-electric tsxp573634m firmware
- schneider-electric tsxp57454m firmware
- schneider-electric tsxp574634m firmware
- schneider-electric tsxp57554m firmware
- schneider-electric tsxp575634m firmware
- schneider-electric tsxp576634m firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-7477 is a high vulnerability (CVSS 7.5) in Schneider-electric 140cpu65150 Firmware, published March 23, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.32%, the 71st percentile. No source names a fixed version.