CVE-2019-19279

Name: CVE-2019-19279
Creator: NVD / NIST
Published: 2020-03-10T20:15:18.807+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.55%

Last modified Jun 17, 2026

CVE-2019-19279 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A vulnerability has been identified in SIPROTEC 4 and SIPROTEC Compact relays equipped with EN100 Ethernet communication modules (All versions). Specially crafted packets sent to port 50000/UDP of the EN100 Ethernet communication modules could cause a Denial-of-Service of the affected device. EPSS estimates a 1.55% chance of exploitation in the next 30 days.

Description

A vulnerability has been identified in SIPROTEC 4 and SIPROTEC Compact relays equipped with EN100 Ethernet communication modules (All versions). Specially crafted packets sent to port 50000/UDP of the EN100 Ethernet communication modules could cause a Denial-of-Service of the affected device. A manual reboot is required to recover the service of the device. At the time of advisory publication no public exploitation of this security vulnerability was known to Siemens.

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

1.55%

72.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Siemens	Siprotec 4	All versions
Siemens	Siprotec Compact	All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-974843.pdfVendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-974843.pdfVendor Advisory

Timeline

Published: Mar 10, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19279?

How severe is CVE-2019-19279?

CVE-2019-19279 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.55% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19279?

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-2019-19279?

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

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Source: NVD / NIST