What’s Vulnerable › Vulnerabilities

CVE-2024-0220: B&R products use insufficient communication encryption

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-22 · updated 2026-06-17
• Weakness: CWE-94

Description

B&R Automation Studio Upgrade Service and B&R Technology Guarding use insufficient cryptography for communication to the upgrade and the licensing servers. A network-based attacker could exploit the vulnerability to execute arbitrary code on the products or sniff sensitive data.

Affected products

• B&R Industrial Automation Automation Studio: before 4.6 — fixed in 4.6
• B&R Industrial Automation Technology Guarding: before 1.4.0 — fixed in 1.4.0

How to fix

Upgrade to a fixed version: B&R Industrial Automation Automation Studio 4.6; B&R Industrial Automation Technology Guarding 1.4.0. Check the vendor advisory for mitigations.

References

• https://www.br-automation.com/fileadmin/SA23P019_Automation_Studio_Upgrade_Service_uses_insufficient_encryption.pdf-1b3b181c.pdf
• https://www.br-automation.com/fileadmin/SA23P019_Automation_Studio_Upgrade_Service_uses_insufficient_encryption.pdf-1b3b181c.pdf

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