CVE-2018-7854
Public exploit available. Not confirmed exploited in the wild yet. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
What it is
From the CVE record
A CWE-248 Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a denial of Service when sending invalid debug parameters to the controller over Modbus.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
1 source with a proof of concept or module.
Exploit links, PoCs and Metasploit modules after sign-in- EPSS
2.3% chance of exploitation activity in the next 30 days, which ranks it in the 83rd percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
The patch came 471 days before any public exploit.
- Public exploit / PoCsource: other
- Patch availableworkaround available, record updated
- Publishedweakness classified
Affected products
- Modicon M340ICS / OT / IoT
- Modicon M580ICS / OT / IoT
- Modicon M580 ControllerICS / OT / IoT
- Modicon M340 ControllerICS / OT / IoT
- Modicon MC80 ControllerICS / OT / IoT
- Modicon Momentum Unity M1E Processor (part numbers 171CBU*) ControllerICS / OT / IoT
- Modicon Quantum ControllerICS / OT / IoT
- Modicon Quantum Safety ControllerICS / OT / IoT
And 3 more affected products. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Scored 7.5 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope UnchangedImpact is limited to the vulnerable component itself
Impact if exploited
- Confidentiality NoneNo confidentiality impact
- Integrity NoneNo integrity impact
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
Sources
References in the record
- nvd.nist.gov/vuln/detail/CVE-2018-7854
- schneider-electric.com/en/download/document/SEVD-2019-134-11/
- talosintelligence.com/vulnerability_reports/TALOS-2019-0765
And 48 more references. See all after sign-in
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