CVE-2018-7242

Vulnerable hash algorithms exists in Schneider Electric's Modicon Premium, Modicon Quantum,...

9.8 Critical

Vulnerable hash algorithms exists in Schneider Electric's Modicon Premium, Modicon Quantum, Modicon M340, and BMXNOR0200 controllers in all versions of the communication modules. The algorithm used to encrypt the password is vulnerable to hash collision attacks.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.88%Up 1.1 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Record: CVE-2018-7242
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-326
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-7242
Updated: 2026-11-02

EUVDEUVD-2018-18981 No score

Record: EUVD-2018-18981
Updated: 2026-11-03

GitHub AdvisoriesGHSA-4cgj-crgg-xwgf 9.8

Vulnerable hash algorithms exists in Schneider Electric's Modicon Premium, Modicon Quantum,...

Record: GHSA-4cgj-crgg-xwgf
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-326
Updated: 2026-11-02

Affected products

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History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-7242 is a critical vulnerability (CVSS 9.8) in Schneider Electric Se Modicon Premium, Modicon Quantum, Modicon M340, Bmxnor0200, published April 18, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.88%, the 79th percentile. No source names a fixed version.