CVE-2020-20490

Name: CVE-2020-20490
Creator: NVD / NIST
Published: 2021-08-31T23:15:06.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.07%

Last modified Jun 17, 2026

CVE-2020-20490 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A heap buffer-overflow in the client_example1.c component of libiec_iccp_mod v1.5 leads to a denial of service (DOS).. EPSS estimates a 1.07% chance of exploitation in the next 30 days.

Description

A heap buffer-overflow in the client_example1.c component of libiec_iccp_mod v1.5 leads to 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

1.07%

60.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Libiec Iccp Mod Project	Libiec Iccp Mod	1.5

References

https://github.com/fcovatti/libiec_iccp_mod/issues/5Exploit, Issue Tracking, Third Party Advisory
https://github.com/fcovatti/libiec_iccp_mod/issues/5Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Aug 31, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-20490?

A heap buffer-overflow in the client_example1.c component of libiec_iccp_mod v1.5 leads to a denial of service (DOS).

How severe is CVE-2020-20490?

CVE-2020-20490 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.07% probability of exploitation in the next 30 days.

How do I fix CVE-2020-20490?

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-2020-20490?

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

Scan your code now

Source: NVD / NIST