CVE-2020-18730

Name: CVE-2020-18730
Creator: NVD / NIST
Published: 2021-08-23T21:15:07.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.41%

Last modified Jun 17, 2026

CVE-2020-18730 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A segmentation violation in the Iec104_Deal_I function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

Description

A segmentation violation in the Iec104_Deal_I function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.41%

69.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Iec104 Project	Iec104	1.0

References

https://cwe.mitre.org/data/definitions/476.htmlThird Party Advisory
https://github.com/airpig2011/IEC104/issues/4Exploit, Third Party Advisory
https://cwe.mitre.org/data/definitions/476.htmlThird Party Advisory
https://github.com/airpig2011/IEC104/issues/4Exploit, Third Party Advisory

Timeline

Published: Aug 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-18730?

A segmentation violation in the Iec104_Deal_I function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).

How severe is CVE-2020-18730?

CVE-2020-18730 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-18730?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-18730?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST