CVE-2018-7852
No known exploitation. EPSS puts it in the 89th percentile. 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 denial of service when an invalid private command parameter is sent 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
No public exploit or proof of concept found in the sources we track.
- EPSS
3.6% chance of exploitation activity in the next 30 days, which ranks it in the 89th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
8 events over 2588 days, from the signal feeds we watch.
- EPSS band changemoderate → low
- EPSS band changelow → moderate
- EPSS band changemoderate → low
- Patch availableworkaround available, record updated
- Publishedweakness classified
Affected products
- 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
- Modicon Premium ControllerICS / OT / IoT
- PLC SimulatorICS / OT / IoT
And 1 more affected product. 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
- schneider-electric.com/en/download/document/SEVD-2019-134-11/
- talosintelligence.com/vulnerability_reports/TALOS-2019-0763
- download.schneider-electric.com/files?p_Doc_Ref=SEVD-2019-134-11&p_enDocType=Security+and+Safety+Notice&p_File_Name=sevd-2019-134-11.json
And 47 more references. See all after sign-in
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