CVE-2018-7838

7.5 HIGH 1% exploit odds Fix listed

What it is

A CWE-119 Buffer Errors vulnerability exists in Modicon M580 CPU - BMEP582040, all versions before V2.90, and Modicon Ethernet Module BMENOC0301, all versions before V2.16, which could cause denial of service on the FTP service of the controller or the Ethernet BMENOC module when it receives a FTP CWD command with a data length greater than 1020 bytes. A power cycle is then needed to reactivate the FTP service.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 1.1% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2019-07-15 21:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 02:03 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 1.1% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2019-07-15 21:15 UTC
Last modified: 2026-06-17 02:03 UTC
Exploit probability: 1.1% · EPSS, next 30 days
Weakness: CWE-119 · Buffer errors
Record status: Modified

Affected

schneider-electric bmenoc0301 Firmware < 2.16
schneider-electric Modicon m580 bmep584040 Firmware < 2.90
schneider-electric Modicon m580 bmep586040 Firmware < 2.90
schneider-electric bmeh586040 Firmware < 2.90
schneider-electric Modicon m580 bmep581020 Firmware < 2.90
schneider-electric Modicon m580 bmep582020 Firmware < 2.90
schneider-electric Modicon m580 bmep582040 Firmware < 2.90
schneider-electric Modicon m580 bmep583020 Firmware < 2.90

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record