← Vulnerability feed

Vulnerability record · CVE-2018-7759 · published 18 April 2018

CVE-2018-7759: Schneider-electric bmxnor0200 firmware memory buffer overflow vulnerability

Schneider Electric · Bmxnor0200 Firmware

A buffer overflow vulnerability exists in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200. The buffer overflow vulnerability is caused by the length of the source string specified (instead of the buffer size) as the number of bytes to be copied.

7.5 CVSS 3.0 High EPSS 1.3% · top 30.6% CWE-119 · Memory buffer overflow
7.5CVSS 3.0 base score, v2 5.0
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
57Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A buffer overflow vulnerability exists in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200. The buffer overflow vulnerability is caused by the length of the source string specified (instead of the buffer size) as the number of bytes to be copied.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

57 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.schneider-electric.com/en/download/document/SEVD-2018-081-02/ Vendor Advisory
https://www.schneider-electric.com/en/download/document/SEVD-2018-081-02/ Vendor Advisory

Track CVE-2018-7759 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-7540Schneider-electric modicon m340 bmxp341000 firmware missing authentication for critical function vulnerabilityA CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Mod…EPSS 2.3%9.8CVE-2018-7761Schneider-electric bmxnor0200 firmware improper input validation vulnerabilityA vulnerability exists in the HTTP request parser in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200 which could …EPSS 2.1%9.8CVE-2018-7242Schneider-electric bmxnor0200 firmware inadequate encryption strength vulnerabilityVulnerable hash algorithms exists in Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers in all versions …EPSS 1.9%9.8CVE-2018-7760Schneider-electric bmxnor0200 firmware improper authentication vulnerabilityAn authorization bypass vulnerability exists in Schneider Electric's Modicon M340, Modicon Premium, Modicon Quantum PLC, BMXNOR0200. Requests to CGI …EPSS 1.5%9.8CVE-2018-7241Schneider-electric bmxnor0200 firmware hard-coded credentials vulnerabilityHard coded accounts exist in Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers in all versions of the c…EPSS 3.7%8.8CVE-2018-7240Schneider-electric 140cpu65150 firmware out-of-bounds write vulnerabilityA vulnerability exists in Schneider Electric's Modicon Quantum in all versions of the communication modules which could allow arbitrary code executio…EPSS 3.2%7.5CVE-2021-22787Schneider-electric modicon m340 bmxp342020 firmware improper input validation vulnerabilityA CWE-20: Improper Input Validation vulnerability exists that could cause denial of service of the device when an attacker sends a specially crafted …EPSS 1.0%7.5CVE-2021-22788Schneider-electric modicon m340 bmxp342020 firmware out-of-bounds write vulnerabilityA CWE-787: Out-of-bounds Write vulnerability exists that could cause denial of service when an attacker sends a specially crafted HTTP request to the…EPSS 1.0%

Source: NIST National Vulnerability Database (record CVE-2018-7759), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.