CVE-2019-19101

Name: CVE-2019-19101
Creator: NVD / NIST
Published: 2020-04-29T03:15:16.58+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 0.52%

Last modified Jun 17, 2026

CVE-2019-19101 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. A missing secure communication definition and an incomplete TLS validation in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x, 4.2.x, < 4.3.11SP, < 4.4.9SP, < 4.5.5SP, < 4.6.4 and < 4.7.2 enable unauthenticated users to perform MITM attacks via the B&R upgrade server.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

A missing secure communication definition and an incomplete TLS validation in the upgrade service in B&R Automation Studio versions 4.0.x, 4.1.x, 4.2.x, < 4.3.11SP, < 4.4.9SP, < 4.5.5SP, < 4.6.4 and < 4.7.2 enable unauthenticated users to perform MITM attacks via the B&R upgrade server.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

0.52%

39.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Br-Automation	Automation Studio	>= 4.0, <= 4.0.29.87
Br-Automation	Automation Studio	>= 4.1, <= 4.1.17.113
Br-Automation	Automation Studio	>= 4.2, <= 4.2.14.119
Br-Automation	Automation Studio	>= 4.3, < 4.3.11
Br-Automation	Automation Studio	>= 4.4, < 4.4.9
Br-Automation	Automation Studio	>= 4.5, < 4.5.5
Br-Automation	Automation Studio	>= 4.6, < 4.6.4
Br-Automation	Automation Studio	>= 4.7, < 4.7.2

References

https://www.br-automation.com/en/downloads/032020-multiple-vulnerabilities-in-automation-studio/Broken Link, Vendor Advisory
https://www.br-automation.com/en/downloads/032020-multiple-vulnerabilities-in-automation-studio/Broken Link, Vendor Advisory

Timeline

Published: Apr 29, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19101?

How severe is CVE-2019-19101?

CVE-2019-19101 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19101?

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-2019-19101?

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

Scan your code now

Source: NVD / NIST