CVE-2018-7812

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-12-17 · updated 2026-06-17
Weakness: CWE-200

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.

Affected products

Schneider-Electric Modicom Bmxnor0200H Firmware: all versions
Schneider-Electric Modicom M340 Firmware: all versions
Schneider-Electric Modicom Premium Firmware: all versions
Schneider-Electric Modicom Quantum Firmware: all versions

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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