Vulnerability CVE-2018-7856
Published: 2019-05-22

Description:
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 possible denial of Service when writing invalid memory blocks to the controller over Modbus.

Type:

CWE-754

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Schneider-electric -> Modicon premium firmware 
Schneider-electric -> Modicon quantum firmware 

 References:
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/
https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0767
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