Description
An Information Exposure through Discrepancy vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 where the web server sends different responses in a way that exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_misc
https://github.com/SadFud/Exploits/tree/master/Real%20World/SCADA%20-%20IOT%20Systems/CVE-2018-7812
Vendor Advisory x_refsource_confirm
https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/
Scores
CVSS v3
7.5
EPSS
0.0083
EPSS Percentile
74.7%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-200
Status
published
Products (4)
schneider-electric/modicom_bmxnor0200h_firmware
schneider-electric/modicom_m340_firmware
schneider-electric/modicom_premium_firmware
schneider-electric/modicom_quantum_firmware
Published
Dec 17, 2018
Tracked Since
Feb 18, 2026