CVE-2020-18731
CVSS v3
7.5
HIGH
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).
Technical details
- Published
- 2021-08-23
Frequently asked questions
What is CVE-2020-18731?
A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).
Is CVE-2020-18731 actively exploited?
Active exploitation of CVE-2020-18731 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2020-18731?
CVE-2020-18731 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2020-18731 affecting your environment?
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