CVE-2020-7537
Reported by schneider · Published December 11, 2020
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| modicon_m340_bmxp3420302cl_firmware | schneider-electric | 3.30 |
| modicon_m580_bmep582020_firmware | schneider-electric | 3.20 |
| modicon_m580_bmep583040_firmware | schneider-electric | 3.20 |
| modicon_m580_bmep586040_firmware | schneider-electric | 3.20 |
| modicon_m340_bmxp341000_firmware | schneider-electric | 3.30 |
| modicon_m340_bmxp342020_firmware | schneider-electric | 3.30 |
| modicon_m340_bmxp3420102cl_firmware | schneider-electric | 3.30 |
| modicon_m340_bmxp3420302_firmware | schneider-electric | 3.30 |
| modicon_m580_bmep582040_firmware | schneider-electric | 3.20 |
| modicon_m580_bmep581020_firmware | schneider-electric | 3.20 |
| modicon_m580_bmep583020_firmware | schneider-electric | 3.20 |
| modicon_m580_bmep584020_firmware | schneider-electric | 3.20 |
4 more packages have a fixed version. See every fix in Lookup.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| 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) |
| 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) |
Timeline
- Dec 8, 2020 CVE Published
- Apr 14, 2021 EPSS Score (30 in total, the first dated here)
- Jun 1, 2026 Security Advisory
- Aug 29, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2020-7537
vulnetix vdb fixes CVE-2020-7537Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2020-7537/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart