#VU26605 Missing Required Cryptographic Step

Published: 2020-04-06

Vulnerability identifier: #VU26605

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19101


Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Automation Studio
Other software / Other software solutions

Vendor: B&R Industrial Automation GmbH


The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.

The vulnerability exists due to the missing secure communication definition and an incomplete TLS validation in the upgrade service. A remote attacker can perform MitM attacks via the B&R upgrade server. 

This vulnerability affects the following versions:

  • Automation Studio, Versions 4.0.x
  • Automation Studio, Versions 4.1.x
  • Automation Studio, Versions 4.2.x
  • Automation Studio, versions prior to 4.3.11SP
  • Automation Studio, versions prior to 4.4.9SP
  • Automation Studio, versions prior to 4.5.4SP
  • Automation Studio, versions prior to 4.6.3SP
  • Automation Studio, versions prior to 4.7.2
  • Automation Studio, versions prior to 4.8.1
  • Mitigation
    Install updates from vendor's website.

    Vulnerable software versions

    Automation Studio: All versions


    External links

    Q & A

    Can this vulnerability be exploited remotely?

    Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

    Is there known malware, which exploits this vulnerability?

    No. We are not aware of malware exploiting this vulnerability.

    Latest bulletins with this vulnerability