What is CVE-2025-3449?

CVE-2025-3449 is a medium-severity vulnerability in B&r Industrial Automation Gmbh Runtime, classified under CWE-340. CVSS score: 4.2/10. Published 2025-10-07.

How severe is CVE-2025-3449?

Medium severity. CVSS v3 base score is 4.2 out of 10.

Is CVE-2025-3449 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in B&r Industrial Automation Gmbh Runtime

CVE-2025-3449

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.

EPSS: 0.000 (8.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

B&r Industrial Automation Gmbh Runtime — versions 6.0, 4

Weakness classification (CWE)

CWE-340

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

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

Frequently asked questions

What is CVE-2025-3449?: CVE-2025-3449 is a medium-severity vulnerability in B&r Industrial Automation Gmbh Runtime, classified under CWE-340. CVSS score: 4.2/10. Published 2025-10-07.
How severe is CVE-2025-3449?: Medium severity. CVSS v3 base score is 4.2 out of 10.
Is CVE-2025-3449 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.