CVE-2018-7847
CVSS v3
9.8
CRITICAL
EPSS Score
3.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.
Technical details
- Published
- 2019-05-22
Frequently asked questions
What is CVE-2018-7847?
A CWE-284: Improper Access Control vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause denial of service or potential code execution by overwriting configuration settings of the controller over Modbus.
Is CVE-2018-7847 actively exploited?
Active exploitation of CVE-2018-7847 has not been confirmed. Its EPSS score was 3.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-7847?
CVE-2018-7847 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2018-7847 affecting your environment?
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