CVE-2024-8314 B&R Industrial Automation GmbH CVE debrief

Who should care

OT/ICS operators using B&R APROL, especially teams responsible for session management, account security, patching, and plant network monitoring. Security and operations staff should prioritize systems exposed to authenticated network access and any deployments where a hijacked session could impact control or administrative functions.

Technical summary

The advisory describes an Incorrect Implementation of Authentication Algorithm and Exposure of Data Element to Wrong Session in B&R APROL < 4.4-00P5. In practical terms, an attacker who already has network authentication may be able to bind or reuse session data incorrectly and take over an active user session, bypassing the need to know the victim's login credentials. The supplied CVSS vector indicates network attackability, low privileges, required user interaction, changed scope, and high impact to confidentiality, integrity, and availability.

Defensive priority

High

Recommended defensive actions

• Upgrade B&R APROL to a non-vulnerable version or apply the vendor patch at the earliest practical opportunity.
• Identify all deployed B&R APROL instances and confirm whether any are running versions earlier than 4.4-00P5.
• Review access controls for authenticated network users that can reach APROL session services or management interfaces.
• After updating, change secrets/passwords if they may have been exposed in affected sessions, as recommended by the vendor.
• Monitor for unusual session reuse, unexpected user impersonation, or administrative actions that do not match expected operator behavior.

Evidence notes

All core facts in this debrief come from the CISA CSAF advisory ICSA-25-093-05 and the linked B&R references in the supplied corpus. The affected product is listed as B&R APROL < 4.4-00P5, and the remediation guidance states to apply the patch or upgrade and to change secrets/passwords after updating. The supplied corpus does not include exploit proof, public incident reporting, or additional technical implementation details beyond the advisory summary.

Official resources