CVE-2020-7537

mediumpriority · track · 30EPSS 0.014 · 72 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.40% (72nd) EPSS

CVSS 5 · medium

Is it mine?

24 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications for affected versions), that could cause denial of service when a specially crafted Read Physical Memory request over Modbus is sent to the controller.

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

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

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)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-754USCWE-754US

affected products (24)

Products and version ranges known to be affected.

n/a Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications for affected versions)≤ Modicon M580, Modicon M340, Legacy Controllers Modicon Quantum & Modicon Premium (see security notifications for affected versions)enisa_euvdEU
Schneider Electric Modicon M340≤ 3.30fstec_bduRU
Schneider Electric Modicon M580≤ 3.20fstec_bduRU
Schneider Electric Modicon Premiumall versionsfstec_bduRU
Schneider Electric Modicon Quantumall versionsfstec_bduRU
schneider-electric modicon m340 bmxp341000 firmware< 3.30nvdUScpe:2.3:o:schneider-electric:modicon_m340_bmxp341000_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m340 bmxp342000 firmware< 3.30nvdUScpe:2.3:o:schneider-electric:modicon_m340_bmxp342000_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m340 bmxp3420102 firmware< 3.30nvdUScpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m340 bmxp3420102cl firmware< 3.30nvdUScpe:2.3:o:schneider-electric:modicon_m340_bmxp3420102cl_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m340 bmxp342020 firmware< 3.30nvdUScpe:2.3:o:schneider-electric:modicon_m340_bmxp342020_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m340 bmxp3420302 firmware< 3.30nvdUScpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m340 bmxp3420302cl firmware< 3.30nvdUScpe:2.3:o:schneider-electric:modicon_m340_bmxp3420302cl_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m580 bmep581020 firmware< 3.20nvdUScpe:2.3:o:schneider-electric:modicon_m580_bmep581020_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m580 bmep582020 firmware< 3.20nvdUScpe:2.3:o:schneider-electric:modicon_m580_bmep582020_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m580 bmep582040 firmware< 3.20nvdUScpe:2.3:o:schneider-electric:modicon_m580_bmep582040_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m580 bmep583020 firmware< 3.20nvdUScpe:2.3:o:schneider-electric:modicon_m580_bmep583020_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m580 bmep583040 firmware< 3.20nvdUScpe:2.3:o:schneider-electric:modicon_m580_bmep583040_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m580 bmep584020 firmware< 3.20nvdUScpe:2.3:o:schneider-electric:modicon_m580_bmep584020_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m580 bmep584040 firmware< 3.20nvdUScpe:2.3:o:schneider-electric:modicon_m580_bmep584040_firmware:*:*:*:*:*:*:*:*
schneider-electric modicon m580 bmep585040 firmware< 3.20nvdUScpe:2.3:o:schneider-electric:modicon_m580_bmep585040_firmware:*:*:*:*:*:*:*:*

showing 20 of 24

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2020-12-11modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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