CVE-2020-20663

Name: CVE-2020-20663
Creator: NVD / NIST
Published: 2021-09-30T17:15:07.527+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.82%

Last modified Jun 17, 2026

CVE-2020-20663 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.. EPSS estimates a 0.82% chance of exploitation in the next 30 days.

Description

libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.82%

52.5th 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/7Exploit, Issue Tracking, Third Party Advisory
https://github.com/fcovatti/libiec_iccp_mod/issues/7Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Sep 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-20663?

libiec_iccp_mod v1.5 contains a heap-buffer-overflow in the component mms_client_connection.c.

How severe is CVE-2020-20663?

CVE-2020-20663 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.82% probability of exploitation in the next 30 days.

How do I fix CVE-2020-20663?

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-2020-20663?

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

Scan your code now

Source: NVD / NIST