No exploitation reportedFix available

CVE-2018-7838

Q: Is CVE-2018-7838 actively exploited?

Active exploitation of CVE-2018-7838 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2018-7838?

CVE-2018-7838 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2019-07-15
Fixed in2.90
WeaknessCWE-119

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC

2019-07-1521:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-7838?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-7838?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Schneider-electric bmeh582040 firmwareversion to verify

Branch	Affected	Fixed in	Source
2.90	< 2.90	2.90	NVD

Schneider-electric bmeh586040 firmwareversion to verify

Branch	Affected	Fixed in	Source
2.90	< 2.90	2.90	NVD

Schneider-electric bmenoc0301 firmwareversion to verify

Branch	Affected	Fixed in	Source
2.16	< 2.16	2.16	NVD

10 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Schneider-electric bmeh582040 firmware to 2.90

Advisories and patches

www.schneider-electric.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.07.8read 2026-10-23
CNAweakness (CWE)CWE-119read 2026-10-23
NVDweakness (CWE)CWE-119read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2019-07-15
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-7838?

Is CVE-2018-7838 actively exploited?

Active exploitation of CVE-2018-7838 has not been confirmed. Its EPSS score was 1.1% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-7838?

CVE-2018-7838 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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