CVE-2018-7812

7.5 highEPSS 3.7%

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.

Severity

CVSS 3.0

7.5 high

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

EPSS: 3.7% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-31)
CWE: CWE-200
Published: 2018-12-17
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

schneider-electric:modicom_bmxnor0200h_firmware
schneider-electric:modicom_m340_firmware
schneider-electric:modicom_premium_firmware
schneider-electric:modicom_quantum_firmware

References

https://github.com/SadFud/Exploits/tree/master/Real%20World/SCADA%20-%20IOT%20Systems/CVE-2018-7812
https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/
https://github.com/SadFud/Exploits/tree/master/Real%20World/SCADA%20-%20IOT%20Systems/CVE-2018-7812
https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/

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