CVE-2020-7477

mediumpriority · track · 30EPSS 0.013 · 71 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.32% (71st) EPSS

CVSS 5 · medium

Is it mine?

29 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-754USprimary

affected products (29)

Products and version ranges known to be affected.

n/a Modicon Quantum Ethernet Network module and Quantum / Premium COPRO (Quantum Ethernet Network module 140NOE771x1, versions 7.0 and prior, Quantum processors with integrated Ethernet – 140CPU65xxxxx, all versions, Premium processors with integrated Ethernet, all versions)≤ Modicon Quantum Ethernet Network module and Quantum / Premium COPRO (Quantum Ethernet Network module 140NOE771x1, versions 7.0 and prior, Quantum processors with integrated Ethernet – 140CPU65xxxxx, all versions, Premium processors with integrated Ethernet, all versions)enisa_euvdEU
schneider-electric 140cpu65150 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu65150_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu65160 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu65160_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu65160s firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu65160s_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu65260 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu65260_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu65860 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu65860_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu67060 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu67060_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu67160 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu67160_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu67160s firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu67160s_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu67260 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu67260_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu67261 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu67261_firmware:*:*:*:*:*:*:*:*
schneider-electric 140cpu67861 firmwareall versionsnvdUScpe:2.3:o:schneider-electric:140cpu67861_firmware:*:*:*:*:*:*:*:*
schneider-electric 140noe77101 firmware≤ 7.0nvdUScpe:2.3:o:schneider-electric:140noe77101_firmware:*:*:*:*:*:*:*:*
schneider-electric 140noe77111 firmware≤ 7.0nvdUScpe:2.3:o:schneider-electric:140noe77111_firmware:*:*:*:*:*:*:*:*
schneider-electric tsxh5724m firmwareall versionsnvdUScpe:2.3:o:schneider-electric:tsxh5724m_firmware:*:*:*:*:*:*:*:*
schneider-electric tsxh5744m firmwareall versionsnvdUScpe:2.3:o:schneider-electric:tsxh5744m_firmware:*:*:*:*:*:*:*:*
schneider-electric tsxp57104m firmwareall versionsnvdUScpe:2.3:o:schneider-electric:tsxp57104m_firmware:*:*:*:*:*:*:*:*
schneider-electric tsxp57154m firmwareall versionsnvdUScpe:2.3:o:schneider-electric:tsxp57154m_firmware:*:*:*:*:*:*:*:*
schneider-electric tsxp571634m firmwareall versionsnvdUScpe:2.3:o:schneider-electric:tsxp571634m_firmware:*:*:*:*:*:*:*:*
schneider-electric tsxp57204m firmwareall versionsnvdUScpe:2.3:o:schneider-electric:tsxp57204m_firmware:*:*:*:*:*:*:*:*

showing 20 of 29

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2020-03-23modified 2026-06-17

related (782)

Related entries.

ID	severity	EPSS	exploitable	published
CVE-2025-39682US	critical9.8OT critical	3.25% (88th)	KEV	2025-09-05
In the Linux kernel, the following vulnerability has been resolved: tls: fix handling of zero-length records on the rx_list Each recvmsg() call must process either - only contig…
CVE-2024-3393US	high7.5OT critical	29.1% (98th)	KEV	2024-12-27
A Denial of Service vulnerability in the DNS Security feature of Palo Alto Networks PAN-OS software allows an unauthenticated attacker to send a malicious packet through the data p…
CVE-2023-41993US	high8.8OT critical	24.3% (98th)	KEV	2023-09-21
The issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14. Processing web content may lead to arbitrary code execution. Apple is aware of a report that t…
CVE-2023-41992US	high7.8OT critical	9.52% (95th)	KEV	2023-09-21
The issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.7, iOS 16.7 and iPadOS 16.7, macOS Ventura 13.6. A local attacker may be able to elevate thei…
CVE-2021-3560US	high7.8OT critical	23.7% (98th)	KEV	2022-02-16
It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be us…

+777 more

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan