An Unverified Password Change vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 wh…

Published 7 y ago 2018-11-30 · modified 4 mo ago 2026-06-17 · JSON

CVSS

9.8

v3.0 · NVD

CISA KEV

not known exploited

EPSS

3.5%

percentile 89%

Public exploits

none known

An Unverified Password Change vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 which could allow an unauthenticated remote user to access the change password function of the web server

Exploit prediction (EPSS)

3.50% probability of exploitation in the next 30 days, higher than 89% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	9.8	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
NVD	2.0	5.0	`AV:N/AC:L/Au:N/C:N/I:P/A:N`

Affected products

Schneider Electric SE Embedded Web Servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200

Classification

Weakness

CWE-640 Weak Password Recovery Mechanism for Forgotten Password

References

tenable.com /security/research/tra-2018-38 · x_refsource_MISC, x_transferred
schneider-electric.com /en/download/document/SEVD-2018-327-01/ · x_refsource_CONFIRM, x_transferred
security.cse.iitk.ac.in /responsible-disclosure · x_refsource_MISC, x_transferred

Sources

CVE List: CVE-2018-7811
NVD: CVE-2018-7811

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