Medium severity4.2NVD Advisory· Published Oct 7, 2025· Updated Apr 15, 2026

CVE-2025-3449

Description

A Generation of Predictable Numbers or Identifiers vulnerability in the SDM component of B&R Automation Runtime versions before 6.4 may allow an unauthenticated network-based attacker to take over already established sessions.

Affected products

B&R Industrial Automation/Automation Runtimellm-fuzzy
Range: <6.4

Patches

Vulnerability mechanics

References

www.br-automation.com/fileadmin/SA25P003-178b6a20.pdfnvd

News mentions

ABB B&R Automation Runtime
CISA ICS Advisories

cvss	0.273
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000