CVE-2020-7475

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-23 · updated 2026-06-17
Weakness: CWE-74

Description

A CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), reflective DLL, vulnerability exists in EcoStruxure Control Expert (all versions prior to 14.1 Hot Fix), Unity Pro (all versions), Modicon M340 (all versions prior to V3.20), Modicon M580 (all versions prior to V3.10), which, if exploited, could allow attackers to transfer malicious code to the controller.

Affected products

Schneider Electric EcoStruxure Control Expert: through 14.0
Schneider-Electric Modicon M340 Firmware: before 3.20 — fixed in 3.20
Schneider Electric SE Modicon M580: before 3.10 — fixed in 3.10
Schneider Electric Unity Pro: all versions

How to fix

Upgrade to a fixed version: Schneider-Electric Modicon M340 Firmware 3.20; Schneider Electric SE Modicon M580 3.10. Check the vendor advisory for mitigations.

References

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