CVE-2020-13559

Name: CVE-2020-13559
Creator: NVD / NIST
Published: 2021-01-11T19:15:12.9+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.32%

Last modified Jun 17, 2026

CVE-2020-13559 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A denial-of-service vulnerability exists in the traffic-logging functionality of FreyrSCADA IEC-60879-5-104 Server Simulator 21.04.028. A specially crafted packet can lead to denial of service. EPSS estimates a 1.32% chance of exploitation in the next 30 days.

Description

A denial-of-service vulnerability exists in the traffic-logging functionality of FreyrSCADA IEC-60879-5-104 Server Simulator 21.04.028. A specially crafted packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

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

1.32%

67.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Freyrscada	Iec-60879-5-104 Server Simulator	21.04.028

References

https://talosintelligence.com/vulnerability_reports/TALOS-2020-1174Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1174Exploit, Third Party Advisory

Timeline

Published: Jan 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13559?

How severe is CVE-2020-13559?

CVE-2020-13559 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.32% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13559?

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-2020-13559?

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

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Source: NVD / NIST