HOMEVULNERABILITIESCVE-2018-7242
CRITICAL

CVE-2018-7242

CWE-326Published: April 18, 2018· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2018-7242 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

schneider-electric114 product(s)
bmxnor0200 firmwarebmxnor0200bmxnor0200h firmwarebmxnor0200h140cpu65150 firmware140cpu65150140cpu31110 firmware140cpu31110140cpu43412u firmware140cpu43412u140cpu65160 firmware140cpu65160+102
Source: NVD CPE · 114 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://www.securityfocus.com/bid/103543
ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-18-086-01
ADVISORYhttps://www.schneider-electric.com/en/download/document/SEVD-2018-081-01/
ADVISORYhttp://www.securityfocus.com/bid/103543
ADVISORYhttps://ics-cert.us-cert.gov/advisories/ICSA-18-086-01
ADVISORYhttps://www.schneider-electric.com/en/download/document/SEVD-2018-081-01/

All References (6)

→
http://www.securityfocus.com/bid/103543Third Party Advisory · VDB Entry
→
https://ics-cert.us-cert.gov/advisories/ICSA-18-086-01Third Party Advisory · US Government Resource
→
https://www.schneider-electric.com/en/download/document/SEVD-2018-081-01/Vendor Advisory
→
http://www.securityfocus.com/bid/103543Third Party Advisory · VDB Entry
→
https://ics-cert.us-cert.gov/advisories/ICSA-18-086-01Third Party Advisory · US Government Resource
→
https://www.schneider-electric.com/en/download/document/SEVD-2018-081-01/Vendor Advisory

Quick Facts

CVE IDCVE-2018-7242
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-326
CISA KEVNo
Affected1 vendor(s)
PublishedApr 18, 2018

Related CVEs (CWE-326)

CVE-2026-44523
10.0
CVE-2020-6966
10.0
CVE-2014-9199
10.0
CVE-2018-0448
9.8
CVE-2018-15124
9.8
CVE-2013-7287
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-7242 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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