CVE-2018-7788

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-05-22 · updated 2026-06-17
Weakness: CWE-255

Description

A CWE-255 Credentials Management vulnerability exists in Modicon Quantum with firmware versions prior to V2.40. which could cause a Denial Of Service when using a Telnet connection.

Affected products

Modicon Quantum - all firmware versions: before 2.40 — fixed in 2.40

How to fix

Upgrade to a fixed version: Modicon Quantum - all firmware versions 2.40. Check the vendor advisory for mitigations.

References

https://www.schneider-electric.com/en/download/document/SEVD-2019-134-08/
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-08/

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