What is CVE-2020-13559?

CVE-2020-13559 is a high-severity vulnerability in Freyrscada Iec-60879-5-104 Server Simulator, classified under CWE-1024. CVSS score: 7.5/10. Published 2021-01-11.

How severe is CVE-2020-13559?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Freyrscada Iec-60879-5-104 Server Simulator

CVE-2020-13559

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.

Published 2021-01-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Freyrscada Iec-60879-5-104 Server Simulator — versions 21.04.028
Freyrscada — versions IEC-60879-5-104 Server Simulator 21.04.028

Weakness classification (CWE)

References

talosintelligence.com/vulnerability_reports/TALOS-2020-1174 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-13559?: CVE-2020-13559 is a high-severity vulnerability in Freyrscada Iec-60879-5-104 Server Simulator, classified under CWE-1024. CVSS score: 7.5/10. Published 2021-01-11.
How severe is CVE-2020-13559?: High severity. CVSS v3 base score is 7.5 out of 10.