Critical severity · published May 22, 2019
CVE-2018-7842
A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an…
9.8
CVSS
35%
EPSS
No
On KEV
Description
A CWE-290: Authentication Bypass by Spoofing vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause an elevation of privilege by conducting a brute force attack on Modbus parameters sent to the controller.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)35.0% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MM
Modicon M340 Firmware · Schneider-electric
All versions, or not specified · source: NVD
MM
Modicon M580 Firmware · Schneider-electric
All versions, or not specified · source: NVD
MP
Modicon Premium Firmware · Schneider-electric
All versions, or not specified · source: NVD
MQ
Modicon Quantum Firmware · Schneider-electric
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-7842
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-7842
Vendor Advisory
https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/
Exploit
https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0741
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