Out-of-bounds write in Modicon M218 Logic Controller V5.0.0.7 and prior
Priority LOW 36CWE-787Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
Out-of-bounds Write vulnerability exists in Modicon M218 Logic Controller (V5.0.0.7 and prior) which could cause Denial of Service when sending specific crafted IPV4 packet to the controller: Sending a specific IPv4 protocol package to Schneider Electric Modicon M218 Logic Controller can cause IPv4 devices to go down. The device does not work properly and must be powered back on to return to normal.
Why it matters now
EPSS 0.01387 72nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Modicon M218 Logic Controller V5.0.0.7 and prior | Modicon M218 Logic Controller V5.0.0.7 and prior | — | No fix listed | CNA |
- Modicon M218 Logic Controller V5.0.0.7 and prior Vendor— Affected Modicon M218 Logic Controller V5.0.0.7 and prior Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:modicon_m218_firmware:*:*:*:*:*:*:*:* | up to 5.0.0.7 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:modicon_m218:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:modicon_m218_firmware:*:*:*:*:*:*:*:* Versions up to 5.0.0.7 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:modicon_m218:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-7524
- 2026-10-03 Alias added: GHSA-v479-fx8q-4c3m
References
More Schneider Electric Modicon M218 Firmware vulnerabilities
- TI-2020-06010 Insufficient verification of data authenticity in EcoStruxure Machine Expert SoMachine… CVSS 3.1CRITICAL 9.8
- TI-2020-06011 Cleartext transmission of sensitive information in EcoStruxure Machine Expert SoMachine… CVSS 3.1HIGH 7.5
- TI-2020-06025 Out-of-bounds write in Modicon M218 Logic Controller CVSS 3.1HIGH 7.5
- TI-2021-05680 Improper input validation in Modicon M218 Logic Controller CVSS 3.1HIGH 7.5
Sources
- CVE-2020-7524 · CVE Program
- CVE-2020-7524 · NVD
- FIRST EPSS
- GHSA-v479-fx8q-4c3m · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences